Saturday, February 27, 2010

International Year of Biodiversity 2010 (official video)

If you are on Facebook, become a fan of the International Year of Biodiversity 2010 page for more information on the issues throughout this year.

Posted via web from a leaf warbler's gleanings

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Thursday, February 25, 2010

The Sibley eGuide to the Birds of North America - now a (pricey) iPhone app

The Sibley Guide to Birds is now available as an app for iPhone and iPod Touch. Check it out at the iTunes app store (here).

Here's a review of the app, which just hit the iTunes store earlier this week. While I own and like the paper copy of the Sibley Guide to Birds, I'm not quite ready to drop 30 bucks on this app yet. The most interesting feature seems to be the bird song collection, which apparently includes multiple recordings/variants. Sounds like an audio equivalent of the multiple illustrations which distinguish the paperback Guide - if so, the app becomes more compelling as an alternative/companion to iBird Explorer Pro, which I have become used to on my iPhone, and which seems to be better designed as an app, and has a few more features - perhaps. Unfortunately, unlike a paperback field guide that I can browse through in a bookstore before purchasing, there is be no way to try this app out before buying it! But, whom am I kidding - I'll probably get it anyway, eventually, just as I have the paperback Sibley as a backup to my preferred National Geographic Guide. One can never have too many field guides - and the publishers of these eGuides are counting on that kind of thinking from a (sizeable) niche market. But why aren't they dropping prices at least below that of the paperback edition? Why does the otherwise successful app store pricing model (low price+high volume=profit) not apply to these field guides? If anyone reading this has bought the app, I'd love to hear what you think!

Posted via web from a leaf warbler's gleanings

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Monday, February 22, 2010

How the Spoon-billed Sandpiper uses its unique beak

David Sibley, of the Sibley Guides to Birds fame, recorded the above video of the critically endangered Spoon-billed Sandpiper, Eurynorhynchus pygmeus, foraging in the mudflats of Thailand where they winter. In an expanding upon the observations annotating the above video, Sibley proposes a hypothesis about how these lovely little birds use their odd bills more like shovels than spoons:


Before seeing the birds, most people assume that they use their bills to swipe sideways through the water, in the manner of the true spoonbills (genus Platalea), sensing and grabbing food items as they pass between the flattened tips of the mandibles. But in reality these sandpipers use very little sideways motion in their feeding. There does seem to be a bit more sideways movement of the bill than in other small sandpipers such as Red-necked Stint, but these are subtle, irregular, and tiny movements and nothing like the rhythmic sideways swiping of true spoonbills.

Coming up with a new hypothesis proved difficult. At first I couldn’t detect any difference in the way these sandpipers fed compared to the stints. They do tend to keep their head down and their bill in the water for longer stretches than the Red-necked Stints, which have a more frenetic foraging action dipping their bill briefly into the water and mud and then raising it again, over and over. Also, the Spoon-bills seemed to feed exclusively in water – I never saw one feeding on open mudflats.

After several days of observation I noticed that while their bills were in the water the Spoon-billed Sandpipers were pushing lumps of mud and algae ahead of them, using their bills as shovels to move mud around. They always look a bit “husky” and thick-necked, which comes in part from this habit of pushing the bill through the mud, as they use their body for leverage and push with their legs. It’s not unusual to see one of their feet suddenly slip backwards under the effort of pushing. Once some mud or algae has been lifted the bird very quickly works the bill tip around underneath it, then moves on. This video shows the shoveling motion clearly in the last scene. (The video will be a little sharper if you click here to open it in YouTube and select 480p).

This seems like a plausible hypothesis to explain the unusual bill shape. The broad bill tip could be used as a shovel to get under and lift up loose substrates, and then would make an effective tool for finding and grabbing any small invertebrates that were in the slurry of mud and water flowing in behind the lifted material. This could also explain why they cover so much ground on the mudflats. If they are looking for loose bits of mud/algae/etc. that they can lift to search for prey, these might be scattered across a wide area, forcing them to walk in search of these foraging opportunities.

Have you ever seen these birds forage? Are you in a position to make more observations in other locations to see if they do the same thing? I am not, much to my regret while watching the above video... Given the rapidly declining populations and our ignorance about even their basic biology, it is clear that the spoons these birds are born holding in their mouths are far from silver ones! Can we at least find out how this marvel of evolution, this wonderful spoon-bill, works before we are forced to bid adieu to the Spoon-billed Sandpiper?

Posted via web from a leaf warbler's gleanings

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Sunday, February 21, 2010

Yet another reason for Israel to become the 51st of the United States of America

For they too have, among the top echelons of their government, "scientists" in charge of public education who do not accept the evidence for evolution or global warming! Wow:
The Education Ministry's chief scientist sparked a furor among environmental activists and scholars Saturday with remarks questioning the reliability of evolution and global warming theory. The comments from Dr. Gavriel Avital, the latest in a series of written and oral statements casting doubts on the fundamental tenets of modern science, led several environmentalists to call for his dismissal.

"If textbooks state explicitly that human beings' origins are to be found with monkeys, I would want students to pursue and grapple with other opinions. There are many people who don't believe the evolutionary account is correct," Avital said yesterday.

"There are those for whom evolution is a religion and are unwilling to hear about anything else. Part of my responsibility, in light of my position with the Education Ministry, is to examine textbooks and curricula," he said. "If they keep writing in textbooks that the Earth is growing warmer because of carbon dioxide emissions, I'll insist that isn't the case."
Now isn't that further evidence of the strong cultural ties between the US and Israel? Doesn't it lend support to the long-argued case for making Israel the 51st state of the US? Further evidence of a shared anathema to science comes courtesy of the NCSE, suggesting that this anti-scientific rot is not limited to the political upper echelons of Israeli government, but may be rather widespread among the general populace as well:
Unfortunately, Avital's views on evolution may be shared by a sizable segment of the Israeli public. A 2006 survey of public opinion in Israel by the Samuel Neaman Institute found that "a minority of only 28% accepts the scientific theory of the evolution [sic], while the majority (59%) believes that man was created by god," while according to the 2000 International Social Survey Programme, a total of 54% of Israeli respondents described "Human beings developed from earlier species of animals" as definitely or probably true, placing Israel ahead of the United States (46%, in last place) for its public acceptance of evolution, but behind twenty-three of the twenty-seven countries included in the report.
And I'm (sadly) gratified to find a shared brotherhood with my biologist colleagues in Israel who find themselves rather unexpectedly having to bat down this kind of inanity.

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Teach the Controversy - sure... but which one?!

Keep pushing teachers to "teach the controversy" - but you may not like what you get when they do! And this teacher didn't even hit upon my ancestral religion!!

Posted via web from a leaf warbler's gleanings

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What rhymes with Galapagos?

Fun to see Baba Brinkman freestyling for Darwin down under... and a pretty good response to the tough question too, although he didn't really come up with a proper rhyming companion word for Galapagos. So what does rhyme with Galapagos?

Posted via web from a leaf warbler's gleanings

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Sunday, February 14, 2010

OMG!! Watch out for a computer bug that goes after your cursor!!

Those predatory instincts are hard to curb, so you've got to go after any small moving object, don't you?! Oblivious to the ensuing LOLZ heard from around the internets! And apparently, computer pointer hunting is not an uncommon activity for Preying Mantids like this one - just click through to the YouTube page for this video by Bug Girl, and you'll find a few other videos (albeit of poorer quality) of similar mantis on cursor action!

Posted via web from a leaf warbler's gleanings

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Saturday, February 13, 2010

Nilavi and Madhu's Great Backyard Bird Count 2010


This Friday started for me with my 4-year-old daughter Nilavi jumping up on the bed and shaking me excitedly with: "Appa! Wake up - let's do the bird count!" Lovely way to start the day, eh? So, after I had awakened fully, Nilavi and I grabbed our binoculars and headed out to the back porch, to conduct our very first count for the Great Backyard Bird Count 2010. Not a bad way to start of Darwin Day either!

As a strong enthusiast for citizen science, and founder of the Fresno Bird Count, I am a bit embarrassed to admit that I haven't volunteered to participate in too many such counts myself! Something about being a "professional" ornithologist, I guess... its not a hobby when I'm doing it regularly for my own projects! But when I have such a bright-eyed partner to get me out of bed and out the door, I just might find myself as a citizen scientist more often. Within the next few days, in fact, for Nilavi is keen to count birds on every one of the 4 days of this GBBC, which runs through this long weekend, from Feb 12-15, 2010.
 
So we did a basic 15 minute count for the first day, focusing on birds within and in the visible vicinity of our backyard. It was far from a dull quarter of an hour, what with a larger than usual flock of American Robins calling and fluttering about the tops of several bare trees, a couple of Northern Flickers tapping along the bigger branches, White-crowned Sparrows singing in the brush of a neighbor's yard, and a flock of Cedar Waxwings bejeweling the tree crowns! We counted a total of a dozen species, and a short while ago, entered our data into the GBBC database. Here's our complete checklist:

California Gull - 15
Mourning Dove - 8
Northern Flicker - 2
Western Scrub-Jay - 2
American Crow - 2
American Robin - 22
Northern Mockingbird - 1
European Starling - 3
Cedar Waxwing - 25
Yellow-rumped Warbler - 1
White-crowned Sparrow - 4
House Finch - 5

And later, I managed to capture the above images of some of the birds. How was your GBBC experience?

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Friday, February 12, 2010

Biology faculty meeting turns deadly in Alabama...

This one hits a bit too close... I am stunned. As a biology faculty member myself, and one who is currently up for tenure, I am really shocked by what happened in the University of Alabama in Huntsville earlier today. I did not know any of the biologists involved, but won't be surprised to find someone just a couple of degrees of separation away. So I can't help but think about what the survivors and the victims' families are going through tonight, and would like to offer them my condolences, empty as that gesture may seem. The academic world (and blogosphere) is no stranger to the stresses of the tenure track, not to mention the usual publish/perish existential dilemmas and anxieties of life in the universities - particularly now when the economy is in such bad shape. There are the rare stories of graduate students attacking faculty members, and of students or faculty committing suicide. But never anything like this - a faculty member apparently going "postal" (to borrow that overworked cliche), committing mass murder! I guess we'll hear a lot more about this in the coming days... although the cable news channels seemed surprisingly devoid of coverage this friday evening (although I did find this video of a press briefing). We have our departmental faculty meetings on fridays too, and sometimes they may seem interminable, but I'll take the tedium over this kind of excitement any day. Having seen (in the mirror, sometimes) my share of stressed out / neurotic / manic-depressive professors, scientists, and graduate students, I feel a mix of horror and fearful curiosity about what went down there in Huntsville, and what may have caused it. What a sad note to end this Darwin Day. Here's an excerpt from the latest New York Times report, with some emerging details:

The Huntsville Times, citing a university official, reported that a biology professor was being held in the shooting. According to a faculty member, the professor had applied for tenure, been turned down, and appealed the decision. She learned on Friday that she had been denied once again..

The newspaper identified the professor as Amy Bishop, a Harvard-educated neuroscientist. According to a 2006 profile in the newspaper, Dr. Bishop invented a portable cell growth incubator with her husband, Jim Anderson. Police officials said that Mr. Anderson was being detained, but they did not call him a suspect.

Photographs of a suspect being led from the scene by the police appeared to match images of Dr. Bishop on academic and technology Web sites.

Dr. Bishop had told acquaintances recently that she was worried about getting tenure, said a business associate who met her at a business technology open house at the end of January and asked not to be named because of the close-knit nature of the science community in Huntsville.

“She began to talk about her problems getting tenure in a very forceful and animated way, saying it was unfair,” the associate said, referring to a conversation in which she blamed specific colleagues for her problems.

“She seemed to be one of these persons who was just very open with her feelings,” he said. “A very smart, intense person who had a variety of opinions on issues.”

The shooting occurred in the Shelby Center at the university around 4 p.m., officials said. Few students were in the building, and none were involved in the shooting, said Ray Garner, a university spokesman.

Officials said the dead were all biology professors, G. K. Podila, the department’s chairman; Maria Ragland Davis; and Adriel D. Johnson Sr. Two other biology professors, Luis Rogelio Cruz-Vera and Joseph G. Leahy, as well as a professor’s assistant, Stephanie Monticciolo, are at Huntsville Hospital in conditions ranging from stable to critical.

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Thursday, February 11, 2010

My blog's strange phylogenetic origin in the Carnival of Evolution #20!

Skeptic Wonder has one of the more creative analytical takes on hosting a blog carnival I've ever seen - an actually phylogeny of the blog posts included in the carnival, based on sequence alignment of each blog post's URL! I'm not sure about some of the results, however... check out where my post on the challenges of teaching evolution ended up in the above tree! How on earth did I end up paraphylizing (if that's a word) Bjørn Østman's blog?!

But, never mind that, this 20th edition of the Carnival of Evolution has plenty of good stuff to read, so head on over there in your spare moments. And pardon my tardiness in bringing this to your attention.

Posted via web from a leaf warbler's gleanings

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Wednesday, February 10, 2010

A film screening for Darwin Day

Join us this Friday, February 12, to mark Charles Darwin's 201st birthday with a screening of "Darwin's Darkest Hours". Screening will be in Science II, room 109, at 3:00 PM, and will be followed by a discussion. You can download the poster below.

Posted via email from a leaf warbler's gleanings

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Monday, February 8, 2010

Biography of Charles Darwin | Janet Browne's Stanford Lecture

LECTURE DESCRIPTION
Dr. Janet Browne presents a biography on Charles Darwin and explores Darwin's Origin of Species. The lecture is concluded with a panel discussion with Craig Heller and Robert Proctor.

This is the third lecture in the Stanford course on Darwin's Legacy I've been sharing here recently (see parts 1 and 2), and is a good one to start off this week with, as we prepare to celebrate Darwin's 201st birthday next Friday. Janet Browne, of course, is the author of what may be the definitive biography of Darwin, published in two volumes: Voyaging and The Power of Place. Click on those links to pick up your copy if you haven't read them yet - this wonderful biography of a truly remarkable scientist belongs in every respectable library! And I particulary urge those of you who are troubled by evolution and may be suspicious of the old man to set aside your prejudices and read these books to appreciate the fullness of his life and work even if its implications trouble you!

Posted via web from a leaf warbler's gleanings

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Tuesday, February 2, 2010

The immortal HeLa cells and their source, Henrietta Lacks

ABC World News aired this story last Sunday, which includes a short interview clip with Rebecca Skloot, whose book The Immortal Life of Henrietta Lacks is just hitting the stores. And yes, the woman's name is Lacks - but lame as it seems, the ABC website and video have misspelt it!! The story itself is quite remarkable, and really well told. I will try to post a review of the book here as I'm hoping to finish reading it soon.

Posted via web from a leaf warbler's gleanings

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