Category Archives: Musings & News

Double Names


On one of my many Googling trips across the Internet I learned the scientific name of the red-footed booby and it made me laugh.

Sula sula?  All I could think of was the Yale fight song whose second verse begins, Boola, Boola.

Are there many North American birds with double scientific names?   I searched my field guide and found about 20 birds, most of which also live in Europe where scientific naming began.

The names are sometimes fascinating:

  • Nycticorax nycticorax = Night raven, Night raven = Black-crowned night-heron
  • Anhinga anhinga = a Tupi (Brazilian Indian) name meaning Devil Bird = Anhinga
  • Histrionicus histrionicus = this bird is Theatrical, Theatrical = Harlequin duck
  • Tyrannus tyrannus = This Tyrant, Tyrant is very aggressive toward predators = Eastern kingbird
  • And, since first published in July 2010 this species has split!  A prehistoric cave dweller = Troglodytes trodlodytes = the Eurasian wren.  Our winter wren is now a different species without a double name: Troglodytes hiemalis.

And finally, Ajaja ajaja used to be my favorite scientific bird name, a fun word to say if you pronounce the J’s as H’s.  Alas, scientists renamed this bird to Platalea ajaja and took half the fun out of the Roseate spoonbill.

 

(photo of a Red-footed Booby by Deborah Acklin)

p.s. Here are two websites that describe the meanings of scientific bird names: Scientific bird names explained and Bird Names at Ornithology.com.

Anatomy: Feet

Diagram of bird toe arrangements (image from Wikimedia Commons)

Bird species have different feet to match their lifestyles. Most have four toes but some have as few as two. Toe position varies, too.

The diagram above shows four of the six variations and assigns a number to each toe. The number is echoed in the drawing by number of segments. For instance, toe #1 has 1 segment, toe #3 has 3 segments.  That’s why the feet look falsely lopsided.

Here’s what the four words mean.

The suffix dactylie is Greek for “fingers.”

Aniso = unequal. Three toes forward + one back is unequal = Anisodactylie.

Zygo = yoke = “arranged symmetrically in pairs.”  Toes 2 and 3 point forward, 1 and 4 point back. Woodpeckers and parrots have zygodactyl feet.

Tridactyl: tri = 3 toes. Emus!

Didactyl: di = 2 toes. Ostriches!

Two arrangements are not shown: 

  • Heterodactyl is like Zygodactyl except that toes 3 and 4 are forward and 1 and 2 are back.  Trogons are heterodactyl.
  • Pamprodactyl has all four toes pointing forward.  Swifts are pamprodactyl with feet like garden claws.

Click here to read more about birds’ feet.

p.s. Did you know that osprey can change the arrangement of their toes? Osprey rotate their outer toes (toe #4) from anisodactyl (for perching) to zygodactyl to make it easier to carry fish.

(diagram from Wikipedia, Creative Commons license. Click on the image to see the original.)

What Can We Do?


When I first heard about BP’s Gulf oil leak, I knew it was bad for birds.

Though initially far offshore, the oil immediately affected diving birds: gannets, terns and pelicans.

The first dead gannet broke my heart.  It could only get worse — and it has.

When the oil reached the marshes it hurt herons, egrets and shorebirds who died unreported because the marshes are inaccessible to cameras.  Even birds that were rescued, cleaned and released flew home to get oiled again because the leak keeps flowing.

Recently oil and death moved into camera range and now the public knows.  The spill is very, very bad.  Even if the leak stopped today the oil will linger for months to come.

What can we do?

As individuals we can’t stop this leak but we can help with the cleanup and support those who are helping birds.  There are many ways:

Want to volunteer in the Gulf?  Check the websites above or click here to sign up at “deepwaterhorizonresponse.com” or here for the International Bird Rescue Research Center.

And finally, you can work to keep this from happening again by telling those in power, especially your Congressman and Senator who made the laws that allowed this to happen, that you’ve had enough.

We don’t have to live like this.

(Coast Guard photo by Petty Officer 2nd Class John Miller, released under the Creative Commons license with some rights reserved.  Click on the photo to see the original and a complete description.)

Stir Crazy

Anonymously decorated tree in North Park (photo by Dianne Machesney)
Another rainy Sunday afternoon and it’s making me stir crazy.  Don’t get me wrong, I’m glad it’s not icy but I wanted to hike in the woods today and cold rain isn’t any fun.

Is anyone else anxious for good weather?  It appears so.

Dianne Machesney sent me this picture from North Park near the Lone Pine ball field and wrote, “Some unknown person has been decorating two tree limb stubs for years now. They change with the seasons and often sport Steeler clothes.”

To me this character’s saying, “Rain is a hopeful sign of spring.”

True, I should try to enjoy the rain.  By the end of the week the lows will be 18 degrees.

(photo by Dianne Machesney)

Warning

Hazard Symbol, poison warning (image from Wikipedia, in the public domain)Some time in the next two weeks the people of State College, Pennsylvania will wake to find dead birds dropping from the sky.

If all goes as planned there will be 15,000 dead starlings on rooftops, in gutters, on patios, in gardens, on parking lots, playsets and fields. 

No amount of advanced warning can prepare people for how appalling this will be but the U.S. Department of Agriculture is trying anyway.  Last week the Centre Daily Times and WJAC-TV announced that USDA has permission to poison the large flock of European starlings near University Park airport because they might pose an aviation hazard. 

Really?  Well, they caused a plane to return to the airport three years ago.  That incident did not result in a mass poisoning but last year’s crash-landing on the Hudson River has the FAA focused on bird strikes.  For them, poison is appealing because it looks like the problem is solved when thousands of birds die.  Unfortunately it’s not an effective long term solution compared to non-lethal methods.

But aren’t there laws protecting birds?  Yes, but not always.  European starlings are not protected because they are non-native and listed as a nuisance species.  USDA is even allowed to poison protected species if farmers claim the birds are damaging their crops.  

So will the poison be dangerous to people and pets?  It depends on who you ask.  USDA uses DRC-1339 which they say only kills starlings (or blackbirds or crows or whatever bird they happen to be targeting) but if that were the case how do you explain these warnings on the label and these rules for handling it?

  • Those who mix it with bait must wear respirators if they are dealing with a pound or more of it.
  • Bait must be carefully placed and removed to insure non-target species are not exposed.
  • Treated baits cannot be placed within 50 feet of water.  
  • It is prohibited to graze animals or grow crops on treated areas for 365 days.

The USDA will be as careful as possible, but the fact is that they’ll be putting DRC-1339 into thousands of portable poison containers (birds) who will fly around the surrounding area for a short time and deposit it by dying in unknown and unpredictable places.  It is impossible to fully control the process. 

Whenever they conduct one of these operations people are appalled and outraged and when they make their outrage known USDA is not asked back again for a very long time.  State College is about to go through this.  Stay tuned for the results. 

OK, I’ll climb down from my soapbox now.  Just don’t say you haven’t been warned.

(image from Wikipedia, in the public domain, color altered)

I’m Dreaming of a White Christmas

White Christmas (photo by Marcy Cunkelman)
OK, I’ll admit it.  I love snow.  I hate to drive in it but everything else about it is gorgeous. 

I love when it’s 28oF with no wind and there are big snowflakes falling around me.  Better yet, I love the day after a snowstorm when the sky clears and the sun glints on untouched snow.  Bing Crosby describes my ideal in his song White Christmas.  Beautiful!

But I’m conflicted.  As I said, I hate – even avoid – driving in snow so I’ve been keeping track of the holiday weather forecast because I’ll be driving the Pennsylvania Turnpike to visit my husband’s family on Christmas (my husband doesn’t drive).  I look at the forecast every day.  Will there be snow?

The good news is that it won’t snow on Christmas Day, the bad news is it’ll rain.  Cold rain.  A forecast high of 41oF in Pittsburgh and 36o in Somerset which is, in my opinion, the Bad Weather Capitol of Pennsylvania and guaranteed to have the worst weather on the Turnpike.

Alas.  Western Pennsylvania looks like Bing Crosby’s White Christmas right now but when Christmas Day comes I’ll just have to dream of it.

(photo by Marcy Cunkelman)

The Sun Stands Still

Sun pillar in Pittsburgh (photo by Kate St. John)
Sun pillar in Pittsburgh (photo by Kate St. John)

21 December 2009

Today is the winter solstice, the day the sun stands still.  That’s what it means in Latin:  sol is sun and stice is from sistere meaning to stand still.

I doubt that most modern day people notice the sun stops its southward movement today, pauses, and in the days ahead begins to move north.

We can afford to ignore it.  We have electricity and our days aren’t governed by the sun’s movement so we can safely leave the calculations of its passage to others.  They’ll let us know.

Besides, the change is slow, something our brains have little patience to observe.  We’re wired to notice rapid movement because it can mean danger or food.

Our gadgets take advantage of this trait and provide a constant source of movement and distraction.  I know this all too well.  My computer and cell phone distract me all the time.  The up side is that my cell phone can take pictures like this one of a sun pillar.

Sun pillars are usually brief events that occur when the sun is close to the horizon and its light reflects on ice crystals that have nearly horizontal and parallel planar surfaces.  In other words, the ice crystals lined up just right and so did the sun.

Will I notice the sun standing still today?  No.  I’m glad someone told me about it.

(photo of a sun pillar in Pittsburgh by Kate St. John)

What a Moon!

Full Moon (photo by Chuck Tague)
The sky was clear, the full moon bright.  Last night my backyard was flooded with light as bright as day.

The trees and even the twigs cast shadows.  If I was a mouse there would be no hiding from an owl in that silvery light.

Above the Arctic Circle the sun set on September 21 inaugurating six months of perpetual darkness – or so I thought until the moon reminded me that once a month everything is revealed.

I imagine last night on Banks Island.  The sea ice glints in the moonlight.  An arctic fox crouches to pounce on a lemming.  A raven scans the ice for seal guts, remains of a polar bear’s meal.  Night is turned to day.

The Snow Moon will wane.  In two weeks time only stars will illuminate the scene.  The night will be dim until the next full moon – a Blue Moon – on December 31.

(photo by Chuck Tague.  See Chuck’s moon-watch in Florida and his Full Moon Schedule for 2010.)

Remote Bird Identification

Black Swan (photo from Wikimedia, in the public domain)
Black swan (photo from Wikimedia Commons)

30 October 2009

Because I’m known for liking birds, people often describe a bird they can’t identify and ask me to tell them what it was.  This week a request from my sister had me stumped for a while. 

My sister’s house overlooks a salt marsh in coastal Virginia.  From her back windows she can see a host of birds I never see at home:  bald eagles, osprey and great egrets, to name a few.  Mary isn’t a bird watcher but sometimes she sees something unusual and asks me what it is.  This week she wrote:  “A large bird – like a goose – has been hanging out at our marsh for the past 4 weeks by himself and he is all black except for under his tail or wing.  Mom and Dad saw it yesterday and didn’t know what it was either.”

Based on that description I sent her some photo links of brants and greater white-fronted geese.  She wrote back, “Nope isn’t that…I looked again with binoculars.  It has a long neck like a swan.  Black except white under its wings.  Beak is reddish.”

There are no black swans native to North America but they do exist in southern Australia.  I wouldn’t even know about them except that they’re sometimes imported to adorn man-made ponds and I’m familiar with a small flock at the water hazards of the Ponderosa Golf Course in Hookstown, PA.  Google and Wikimedia came up with this picture.  I sent it to my sister and she replied, “100% YES!”

What will happen to this bird?  Who can say?  He’s alone, imported from a remote place, and probably escaped from his former life as a pond ornament.  His large size protects him.  A salt marsh in southern Virginia where it rarely snows is probably just fine for the winter. 

Another victory in Remote Bird Identification.

(photo from Wikimedia Commons, in the public domain.  Click on the image to see the original)

p.s. The black swan in my sister’s town was unable to fly so it was captured and sent to a rehabber.

Disease links T.Rex to raptors

Hypothesized Trichomonas-like infection in T. rex (Illustration by Chris Glen, The University of Queensland from plosone.org)
Hypothesized Trichomonas-like infection in T. rex (Illustration by Chris Glen, The University of Queensland from plosone.org)

14 October 2009

For years people believed the holes in the jawbones of many Tyrannosaurus rex skeletons were evidence of fighting, even though they were too round and perfect for violent combat.  Recently paleontologists re-examined the holes with a new theory in mind and published their findings on PLoS One.

What lead them to the discovery was this thought:  Where have we seen holes like this before?  We’ve seen them on the jawbones of modern day birds of prey who suffered from a common avian parasitic infection called trichomoniasis.

Raptors, including peregrine falcons, catch trichomoniasis by eating diseased prey.  Peregrines are susceptible to it because they eat pigeons who carry the disease without showing symptoms.  Trichomoniasis invades the mouth and throat causing lesions which eventually penetrate to the bone.  The lesions block the throat making it hard to swallow and the raptor dies of starvation. 

When the paleontologists compared the holes on the tyrant dinosaur jawbones to those of raptors who had trichomoniasis, everything matched up.  The illustration at right shows how the infection would have looked on Tyrannosaurus rex with lesions both inside and outside mouth.  (Ewwww!)  Just like raptors, the tyrant dinosaurs would have caught it through feeding on diseased meat or by snout to snout contact. 

To me, the cool part of this discovery is that modern day birds are close enough to T.rex that they still suffer from a tyrant dinosaur disease. 

And it solved another mystery for me.  When peregrine falcon chicks are banded, the veterinarians always swab their throats with a long Q-tip to test for disease.  Now I know at least one of the diseases they’re looking for.

For more information on this discovery, click here or on the illustration to read the original article at PLoS ONE

(Illustration of trichomoniasis in T.rex, based on photographs of living birds suffering from the disease and bird necropsies, by Chris Glen, The University of Queensland.  Article Citation: Wolff EDS, Salisbury SW, Horner JR, Varricchio DJ (2009) Common Avian Infection Plagued the Tyrant Dinosaurs. PLoS ONE 4(9): e7288. doi:10.1371/journal.pone.0007288)