Avian Anatomy, Physiology and Other Adaptations

BIRD-SPECIFIC ANATOMY AND PHYSIOLOGY, presented to ABC by Ed Pullen on October 16, 2019

Ed Pullen regales the ABC’ers about Bird Anatomy on October 16, 2019

Ed, already an expert in anatomy and physiology has changed his focus from Homo sapiens to the classification Aves, which share only a backbone and warm blood with humans and other mammals.  The differences were summed up as, “It’s all about flying,” with a deep dive into feathers, how they evolved and possibly why, and the physics of flying. 

Ed uses a feather as a pointer to show the how-to of flight

A major difference between birds and other creatures is their lung action, a topic that includes inspiration, expiration, avian hemoglobin, air sacs including in hollow bones, and the myoglobin in the muscles that’s placed handy to the hemoglobin.  A video shown at the end, helped illustrate this interesting one-way respiration (see link below).  Ed gave the extreme example of Bar-headed Geese which migrate OVER the Himalayas, something that would kill anything else without their super-adaptation of basic bird oxygen usage. 

Ed started out his presentation talking about feathers, here holding up a Steller’s Jay feather with the structural coloration

Ed had bird factoids to illustrate every point, including the amazing story of how Penguins don’t get the bends. 

Eating got a lot of attention, including pregastric adaptations such as the crop, the gizzard, the extremely short small intestine, etc., which all assist with letting the bird eat fast, then digest elsewhere, for safety.

Other amazing aspects of birds’ anatomy included the amazing eyes, their large size, ability to see UV and perhaps magnetic fields.  Also covered were the amazing reproductive systems, allowing some species to actually raise chicks of the gender that are the most likely to survive under prevailing conditions.  Size of the yolk directly matches with altricial (small yolk) vs. precocial (large).

Ed got his points across to the Willettes (Diane, Carol, Faye, & Laurel)

Ed ended his presentation with an amazing set of videos that illustrated many of his  points, as well as entertained us!

ED’S LINKS FOR MORE INFORMATION AND ENTERTAINMENT:

birds amazing respiratory system video https://www.youtube.com/watch?v=kWMmyVu1ueY 

Club Winged Manakin making it’s mating song with its wings https://youtu.be/NQRzOqP9iNc 

Bower Bird display   https://www.youtube.com/watch?v=1XkPeN3AWIE   Skeletal Adaptations for Flight  https://www.youtube.com/watch?v=HMba0KByEPY

Bar-headed Geese Fly High  https://www.youtube.com/watch?v=3y9C2Sj-RbQ

Birds of the Mississippi River Delta https://www.youtube.com/watch?v=cjD_ElZDW3A

King-of-Saxony Bird-of-Paradise https://youtu.be/MdNyeasi0GI  King-of-Saxony Bird-of-Paradise

What’s In a Name: Ken on Bird Names and Nomenclature

5-23-19 – Ken Brown gets excited about Elliott Coues during his talk about bird names

Thursday May 23rd at the U.P. Library our mentor Ken Brown presented the program: What’s in a Name: A History of Bird Nomenclature and Common Names.

The program was really in three parts. Initially Ken gave the story of Carl Linnaeus, 1707-1778, a botanist by training, so bored with school that he failed one college before being rescued from failing again when his lecturers realized he knew more than they did and made him a lecturer. He went on to publish the first book on a nomenclature system for all things, plants, animals and minerals. It appears that he was not lacking in confidence, as near the end of his life he wrote a passage Ken quoted telling everyone how great his work was and how no one else’s work could compare.

5-23-19 – Our leader Ken Brown, flanked by the Willettes in WOS regalia (Laurel, Faye, Carol, Diane)

Ken then outlined how the system evolved into its current system of Domainà Kingdom à Phylum à  Class à Order à Family à (subfamily) à Genus à  Species à (subspecies). 

In the second segment Ken gave biographical narratives of Carl Linnaeus and then three of the top early North American ornithologic greats. 

Linnaeus was discussed above.

First the father of North American Ornithology Alexander Wilson, 1766- 1813, a political refugee from Scotland where he was imprisoned after writing sartirical support for striking miners, and escaped to the U.S.  Here as a teacher and spare-time ornighologist he studied the birds of eastern North America and wrote a 9-volume American Ornighology series (7 published before his death) that became the sentinel work in American Ornithology and established him as the father of North American Ornithology.

Next Ken talked about “J.J. (a.k.a. John James Audubon) born Jean Rabin, the bastard son of Lt. John Audubon, a British lieutenant and privateer, probably mothered by a chambermaid-mistress Jeanne Rabine who died shortly after his birth.  Ken outlines some of the colorful aspects of J.J.’s life including bankruptcy, grave robbing and of course his pioneering bird art.  Ken suggested that J.J. was a pioneering artist and not as important as an ornithologist.

Next Elliott Coues, 1842-1899, was one of Ken’s favorites, an outspoken (to it gently) giant in N.A ornithology.  Coues was an Army Medical Officer, and top ornithologist who was instrumental in introducing the trinomial nomenclature (including subspecies name) of birds, and wrote a key to North American Birds. He also wrote a treatise on whether swallows migrated or hibernated under lake ice, incredible to comprehend given todays understanding, but a controversial topic of the time).  Ken talked about his work in founding the American Ornithologic Union, and his discovery of a new warbler species that after he sent a specimen to J.J. was named after his apparently beloved 18 year old sister Grace, hence Grace’s Warbler. 

After a break Ken took questions about common bird names, looking up the answers in an old book he inherited as a part of the bird library of Bob and Georgia Ramsey, Ken’s mentors in birding and icons in the local birding community.

A good time was had by all.  Ken made a call to all members to help us get back to our roots by developing programs on birding related topics to help us all become stronger birders, and increase our own birding and ornithologic backgrounds.  Who’s up next?

Stay tuned for a You Tube version of Ken’s talk with audio over the power point slides for anyone who wants a review, or missed the talk. 

Travel to Cuba, for the Birds

by Jerry Broadus

The United States embargo of Cuba, and that country’s reaction to it, has resulted in a fascinating birding destination unlike any other in the Caribbean. It is now a cliché that the country is trapped in a time warp, with hundreds of classic American cars from the 1940’s and 1950’s still running on coastal roads in a relatively unspoiled and uncrowded landscape. The limestone hills of Vinales, the 1.5 million acre wetland of Zapata National Park, the beaches of the Bay of Pigs and of the keys (Cayos) of the Caribbean, together offer easy opportunities to spot most of the island’s 26 endemic species, as well as many others of the 370 bird species recorded there.

Travel to Cuba for birding is becoming easier, but there are still challenges. The Presidential directive from December of 2014 has led to a loosening of Treasury Department regulations in an effort to normalize relations with the Raul Castro Government. The embargo is still in place, so there are still prohibitions, from both the United States and the Cuban governments, however much of the old “red tape” no longer applies.

A little background information on Cuba helps one to plan for a trip. Cuba requires a tourist visa for U.S. citizens. Cuba has an ambassador to the U.S., but as yet there is still no embassy. There is, instead, a Cuba Interest Section housed in the Swiss Embassy in Washington D.C. In the past, obtaining a Visa could take a lot of time, as the Cuba Section could not pay for a real staff using funds in any U.S. Bank. That has changed, in that the regulation now specifically allow for the Ambassador to use our banking system, but obtaining a visa is still easiest with a little help, which I will explain later.

Cubans are generally poor by our standards.  According to Time Magazine, the average wage is $20 per month.  A professional government guide might aspire to twice that.  In addition, the Cuban system guarantees free housing, health care, and education through college. The health care system is excellent, the literacy rate is over 90%, and almost all the people you meet speak English. Basic food staples are rationed, and small organic gardens are found everywhere, but if a person sells food to another he or she must share the profits with the government. So all basic needs are well covered, but “spending money” is generally non-existent.

Before Raul took over, private enterprise was illegal. All approved work was for the government, which controlled how jobs were handled. It is still very common for a person to work only a few days a week, and then take a few days off while another person fills in at the same job, to spread out the work. Now, certain small businesses, generally limited to services such as hair parlors, small appliance repair, or family cafes, can be run as private enterprises. Cafes quickly sprang up outside of the cities, especially along the coast, and took on the generic name “Paladares,” which came from a popular Brazilian soap opera. There is, of course, a real black market (especially in car repair) that is largely based on barter rather than money.

Thus it should not be a surprise that few people bother with bank accounts. Consequently, although it is now legal to use U.S. credit cards in Cuba, you will probably not find anyone (outside of the gasoline stations, which sell fuel at about one U.S. dollar per litre) who will take one. Plan on taking cash for any expenses that are not prepaid. You will have to change your money into Cuban Convertible Currency (CUC) when you arrive in Cuba. (Generally you will do this at the airport. We saw a few ATM machines in Havana, but they had very long lines).

There are good to excellent hotels, both in Havana and in older resort areas, which generally predate the revolution (1959). There are also new beach resorts, mostly financed by Canadian or Brazilian companies operating under cooperative agreements with the Cuban Government. Essentially, all the hotels are government run, and have the only legal internet available for public use (it’s expensive; out of reach for most Cuban citizens). The new resorts have Cuban run television, where I was able to watch the Super Bowl streamed from Mexico. You can rent private rooms in some people’s houses in popular tourist destinations, but it is difficult to find them.

Transportation is one of the biggest problems in Cuba. New cars are too expensive for Cubans to buy, and no one with an old car will sell it. There are a few car rental agencies at the airport, but way too much competition for the number of cars they have. You don’t see many buses outside of Havana. Daily transportation, outside of Havana, generally involves hitching a ride (if an employee is lucky enough to be provided a car at work, he or she is required to pick up hitch-hikers) using a horse drawn carriage, a bicycle, or by hopping on a tractor pulled trailer (in some areas this includes school children).

The lesson in all of this is that Cuba is a difficult country for an independent traveler to negotiate. You can do it if you have the time to tolerate standing in a lot of lines, including standing beside the road waiting for a ride. Finding a room, or even a meal, might involve relying a lot on word of mouth. For this reason alone I recommend taking a tour, and letting the operator arrange everything.

When Clarice and I went, we had to fill out a few forms to allow us to participate under the tour operator’s license. As a U.S. citizen you can only travel to Cuba to participate under one of 12 approved categories, and tourism is not one of them. This is why you are still reading in news reports that you can’t go to Cuba just to lie on the beach. Actually, birding is one of the best categories to fall under. General bird watching is probably too “touristy,” but “bird surveying,” as part of a conservation agenda, is permitted under the “humanitarian” category. We went under the humanitarian license of Caribbean Conservation Trust (www.cubirds.org) as conservation bird surveyors. To fulfill U.S. requirements, we had to send in a one paragraph resume of bird survey experience, and apply for and carry a separate letter for each of us stating that Caribbean Conservation Trust would provide a leader who would make sure we followed the rules (our leader was Alvaro Jaramillo). The “rules” included keeping a bird list with numbers of individual birds sighted, and handing it in to the Cuban Natural History Museum, which was all handled by Alvaro and the operator.

Then, we had to charter a flight from Miami to Havana, which had to be provided by a separate company (of course, Caribbean Conservation Trust contacted that company for us as well). It was the charter company that obtained and sent us our tourist visas. Finally, our group met at the charter desk in Miami where an American Airlines representative checked all of our paperwork before giving us boarding passes. That paperwork check was essentially the extent of U.S. government control over our group. When we returned, of course U.S. customs knew where we had been as we were all on the charter flight back from Havana, and they did ask us what we did. “Bird Surveying” was an acceptable answer.

In Havana, Cuban immigration and customs was very thorough and professional, but also slow. Each of us was interviewed separately, as well as photographed and our passports scanned. They do indeed stamp your passport.

So what has changed? Now, the treasury regulations (which can be found on-line by Googling “Treasury regulatory amendments to Cuba travel”) allow for travel under a “general license”. In practice, that means you no longer have to fill out advance forms describing your plans to the U.S. government. Instead, what I have seen is a one page form with all the approved categories listed on it, where you merely check one and sign it (just remember that conservation work is “humanitarian”). Also, charter flights will soon be available from New York City, Baltimore, Chicago, and Los Angeles. Regularly scheduled flights from the U.S. are still restricted, so you still have to charter, and the charter company will still handle getting your visa. Also, of importance is that the regulations now have no limit as to how much you can spend in Cuba to fulfill your approved purpose. Since many of the bird survey areas are conveniently located near beach resorts, as a bird surveyor can now use them without any advance permission from the U.S.  Finally, it is well reported that you can now bring back rum and cigars, up to $100 in value, as part of a $400 general allowance in imported goods.

Ferry travel to Cuba from Florida has also been approved by the U.S. Government, but the Cuban Ambassador has warned that it will not be allowed except under strict Cuban scrutiny. The U.S. companies generally appear to be “crowd sourcing” right now to obtain funding.

If you read the rest of the regulations you will see a lot of actions intended to foster independent businesses, communication, and banking in Cuba. These, of course, could provide the fuel for the expected changes that you have read about (“Go to Cuba now before Starbucks and McDonalds get there”). Change will come, but probably on Cuba’s terms. I believe the Cubans are serious about maintaining their Socialist system, if they can get the cash to run it. Right now, they rely to a great extent on import duties and on partnerships with foreign companies running resorts. I doubt that they will welcome “Americanization” without putting their own stamp on it, which will likely delay the interest of many American institutions. But, on the other hand, the Cuban Government is planning to build a “free port,” which may portend a change in attitude.

So, if you want to go look at Cuba’s wonderful birds and experience its friendly and very safe travel, start considering booking a tour. Our provider, Caribbean Conservation Trust, has handled birding tours in Cuba for over 18 years, for several organizations including the Western Field Ornithologists. They will be handling the upcoming BirdWatching Magazine tour in February, 2016, with Arturo Kirkconnell (co-author of the Field Guide to the Birds of Cuba). Another agency we have used in the past, including for our trek across Panama, is JB Journeys (www.jbjourneys.com) which is run by friends of ours and is very responsive. They plan on offering a birding trip, including cultural activities, in May of 2016 (and possibly earlier, in February) also with Arturo Kirkconnell. There are surely many more being planned as you read this.

Charlie Wright on eBird.

Our second ABCBirding club meeting at the University Place Round Table Pizza featured Charlie Wright presenting on eBird, the Cornell University site for birders to post their birding checklists for safekeeping and to contribute to citizen science. I know I learned a lot, especially the changes in recent years that make data entry much faster and easier than it was years ago when I first tried out eBird.

Some cool things I learned was how to use the site finder map to quickly zoom in to locate the area you are birding for data entry by site, how to use the site for information on seasonal patterns down to incredible detail on each species, and how to share checklists with other eBirders. If on our field trips all of us use eBIrd, we can each keep and enter a checklist for each location we bird, and then just share all the checklists. Many hands will make light work of the data entry.

Charlie was also kind enough to share his power point presentation through a file sharing site, so if you want to refer to the presentation you can *click here .*

It would be great to see everyone join eBird and list their eBird user names below as comments so we can generate a cut and paste list of eBird user names to share checklists.

For those of you who learn better via videos, here is a YouTube video put out by Cornell.


 

Sparrow Identification- Generic Approach +

Whether the generic approach to sparrow ID primarily from Kauffman’s new Advanced Birding book, along with info from the Rising and Beadle sparrow book, some tips from the Pete Dunnes Field Guide Companion, and bits and pieces from Ken’s classes and elsewhere. Unfortunately I think to use this approach it is necessary to just memorize a small amount of information, and then to build on that information with understanding and experience.

To get to a copy of this table in a word format Click Here then download the word file, open the download, and you can save it or print it out.  If you don’t have microsoft word and would prefer a less attractive google document click here.

 

Here are the first 6 Genus summaries in the first table followed by the next 6 in the second table.

  Aimophila  & Peucaea Spizella Pooecetes Chondestes Amphispiza Calamospiza(Lark bunting)
Size Medium Small Large Rather large Medium Large Large
Bulk Heavy Bodied Bulky Fairly slim for large sparrow Avg. Bulky
Tail Long usually rounded Medium-long, usually notched, variation between species helpful Medium long squared Long rounded Short and wide
Head Rather flat crowned Rounded Fairly rounded Large rounded Slightly flattened crown Large and rounded
Bill Small bills Avg. avg Avg. Large
Habitat Dense vegetation near ground Brushy woodlands or edges, not grass or marsh Very open habitats incl. grasslands, brush areas, avoids dense cover Brushy near open ground On or near ground in dry open country Non-breeding in open ground, brush, farm country
Behavior Shy, quiet, near ground,flush reluctantly Feed on ground, perch in trees, often conspicuous perches in open Not secretive, perches in the open often Conspicuous perches, flys high between perches with sharp metallic call note Perch in open, not secretive (exc. Five-striped), Sage runs with tail cocked, bobs tail. Feed on ground,, perch up in trees, often in the open
Groups Pairs, never large flocks Flock with own kind In winter small loose flocks Small loose flocks in migration and winter Pairs or family groups, not large flocks Tight flocks
Flight High Wide tail, broad rounded wings, contrasty look
Plumage No distinct seasonal plumage Several have seasonal variation White outer tail feathers in flight, darkly outlined ear patch. Very Conspicuous markings Distinctive markings Conspicuous dark underwings, pale patches on coverts
Vocal-izations: musical Thin, lisping call notes of some
Species 4 Peucaea: Rufous-winged, Botteri’s, Cassin’s Bachmann’s Amophila: Rufous-crowned Am. Tree, Chipping, Clay-colored, Field, Black-chinned, Worthens Vesper, Lark Black-throated,  Sage,     Five-striped Lark Bunting
Overall Summary Medium sized, plump, rather flat crowned, secretive, dense, hug ground Small, notched-tailed, flocking, feed on ground and perch in trees Vesper, large, bulky, square tailed, non-secretive, dark ear patch, white outer tail feathers in flight Lark:  Large, slim, long tailed, conspicuous markings, open perches. Medium sized, fairly conspicuous exc. Five striped, pairs or alone. Large, bulky, conspicuously dark, easy breeding, non-breeding contrasty.

 Table 2

Passerculus Ammodramus Passerella Melospiza Zonotrichia Junco
Size Small Medium Large Medium Large Medium-Large to Large Small-medium
Bulk Medium-light Chunky Chunky Plump Plump Avg.
Tail Short-ratty Short-tailed Medium Length (longer in West) Longish, rounded or squared tips Fairly long square tipped White-outer tail feathers very obvious
Head Rounded Flat foreheads Rounded Rounded Slightly Peaked Crown rounded
Bills Small Vary between species Varies but generally large Avg. Proportionally not large small
Habitat Open fields, marshes Species specific grasslands, precise habitat a clue to identification Low dense vegetation Usually dense vegetation Brushy areas or woodland edges Breed Northern Forests, winter in open near cover
Behavior Bold, not elusive, perches in open often Hard to flush, fly low, dive into vegetation Scratch with 2 feet, hopping backwards Usually secretive, Song sometimes not Feed on ground, perch conspicuously when disturbed When disturbed move into trees or shrubs
Groups Small loose flocks Strictly solitary in non-breeding season, never flock Often in small mixed flocks, never in flocks of own kind Usually solitary or pairs, never flocks Almost always in flocks Small to larger flocks.
Flight Light and buoyant, longer broader wings than other sparrows of open habitat Weak labored flight Darting
Plumage Variable, most with yellow lores &/or supercillium Getting a good look difficult. Three subspecies may be split in future Usually distinctive Distinctive, hooded look.
Vocal-izations: Call note distinctive hard smack except in Thick-billed race in CA and OR. All N. of Mexico share call note a “cheff” Call notes sharp and distinctive
Species Savannah Grasshopper,                   Baird’s,                     Henslow’s,  Le Conte’s, Nelson’s  Saltmarsh Seaside Fox Song,  Lincoln’s, Swamp White-throated, Harris’     White-crowned, Golden-crowned Dark-eyed(subspecies more of a challenge) Yellow-eyed
General Summary Savannah: default field sparrow, small, ratty tail Medium sized, weak flying, short tailed, secretive grasslands birds.  Fly and dive into grass. Solitary, never flock. Fox, may be split. Large, plump, low dense vegetation, scratch with 2 feet, respond to pishing Largish, plump, long tailed, tend to be secretive, never flocks, most have cheff call note. Crowned sparrows: Fairly large or bigger, plump, long square tailed, birds of brush or edges, tend to flock, call notes good to know. Small to medium, round headed, white outer tail feathers. Flocking in winter, darting flight.

 

Unfortunately I think to use this approach it is necessary to memorize a modest amount of information, and then to build on that information with understanding and experience .I’m no sparrow expert, and so I tried to collate this information in a format that may help in this learning, as well as organize the information so that it is easier to make sense of an learn.

If I’ve learned anything from this homework, it is that trying to learn to ID sparrows just from field marks alone is going to leave a few birds identified and a lot of LBJs. Too often the view is brief, obstructed,or distant.  If we take what we know from a brief glimpse and combine that with what we know at the time we see the bird:  range, habitat, season, etc, and try to think about what we have seen:  estimate of general shape and size, flight appearance, flocking or alone, and behavior we can usually narrow the options down to just a few choices. Ideally we will be able to make a good guess as to the genus of the bird.  Then if we know the birds in that genus or two that are possible or likely in the area we are birding we can limit the choices.

Second is that it’s really important to know the common sparrows really well.  Knowing Song sparrow as the typical Melospiza, Savannah, Grasshopper as the Ammodramus found in most areas, and the crowned Zonotrichia sparrows we will be able to note if a bird is different from these common species.  Knowing female house sparrow from every angle and every detail, and house sparrow calls will keep us from looking carefully at every churry in every bush in every neighborhood we bird.

So let’s look at some sillhouettes and then at these common sparrows in more detail than we might usually.

Song Sparrow as the Default Melospiza sparrow:  remember when you travel the subspecies vary considerably.  Let’s look at the things that don’t change.  Face:  Mostly gray with Strong submalar stripe. Broad grayish eyebrow stripe. Streaked back and flanks.   Wings:  often rust brown in greater coverts.    Long rounded or doubly rounded tail, pumped in flight.  White chin. Hops. Lankier than Fox, more robust and broad-brush streaks than Lincolns.

Savannah Sparrow:  The default field sparrow in many areas. Quite variable:  Common to all subspecies:  Neat and cleanly marked, white underparts with three facial stripes, behind eye, moustachial and submalar.  Face color quite variable. Short tail, square in flight, notched at perch.  Small bill. Median crown stripe usually whitish.

Grasshopper Sparrow as typical Ammodramus sparrow: esc. Juvenile unstreaked underparts, white median crown stripe, flat forehead, complete eyering, spot on ear auricular, streaked back, rufous pattern of rufous spots on back, large bill.  Remember Florida birds darker, song may be different.

First Winter White Crowned vs. White Throated vs. Golden Crowned: 

WC:  Yellow bill, Bold stripe behind eye, head pattern dully approaches adult. Short primary projection.

WT: Gray bill, yellow lores dull, has very sharp lower border of throat like adult, unlike WC.  Smaller and plumper than other zonotrichia. More rufous on wings.

GC:  Gray bill, faint eye stripe, head pattern dully approached adult.

Song vs. Lincolns: If you get a good look at adults, not too tough.  With a brief look- Look for tail length, much shorter in Lincolns, Bill: more slender in Lincolns, overall finer streaking on back, sides and breast.

House Sparrow:  Female- streaked back, unstreaked underparts, buffy eyebrow stripe,

Check out these two videos.  Look not at field marks, but shape, size, tail, head, etc.

http://www.youtube.com/watch?v=3mlu2fp25S4

http://nationalzoo.si.edu/SCBI/MigratoryBirds/Video/video.cfm?id=4oFfc5DOehg

There are lots of other great online videos. There are unfortunately few that show sparrows in flight.