laelaps | March 7, 2010
A California sea lion (Zalophus californianus), photographed at the Central Park Zoo.
laelaps | March 6, 2010
A male red-winged blackbird (Agelaius phoeniceus), photographed in Cape Henlopen State Park, Delaware.
laelaps | March 5, 2010
A jaguar (Panthera onca). From Flickr user Prosper 973.
One year ago this week Macho B was euthanized. He had been captured in mid-February of 2009, the only known jaguar living inside the United States, but after he was caught and fitted with a radio collar his health quickly deteriorated. When he nearly stopped moving he was recaptured, taken to the Phoenix zoo, and put to sleep when it was discovered that he was suffering from irreparable kidney failure.
At first it seemed as if his capture was a lucky accident, but a later investigation by the Fish and Wildlife Service found that the…
laelaps | March 4, 2010Yellowstone National Park is an amazing place. I stayed there for three days longer than I had originally planned and I still was not ready to leave it. Even if I had spent another week there I still would not have seen all the natural wonders of the park, but fortunately the BBC recently sent film crews to Yellowstone to capture its natural history in every season. These vignettes were expertly strung together in the miniseries Yellowstone: Battle for Life, and embedded below is one of the scenes in which a fox tries to catch dinner in the middle of winter:
see more Lolcats and funny…
laelaps | March 3, 2010
The exceptionally preserved skeleton of Darwinius, known popularly as "Ida." From PLoS One.
Almost ten months ago an international team of researchers introduced the world to an exquisitely-preserved primate from the 47 million year old oil shales of Messel, Germany. Dubbed Darwinius masillae, and nicknamed "Ida" and "The Link", the fossil was touted as one of our earliest primate ancestors in a massive media campaign worthy of a Hollywood blockbuster. Yet the trouble was that there was no solid evidence that Darwinius was one of our ancestors. Despite the marketing blitz promoting the…
laelaps | March 2, 2010
A young Japanese macaque (Macaca fuscata), photographed at the Central Park Zoo.
laelaps | March 2, 2010
Here's another sneak-peek at Life (this time with David Attenborough's narration) featuring one of my most favorite canids, the Ethiopian wolf (Canis simensis). Enjoy!
laelaps | March 1, 2010
An adult chimpanzee in Bossou, Guinea uses hammer and anvil stones to crack nuts as younger individuals look on. From Haslam et al., 2009.
Before 1859 the idea that humans lived alongside the mammoths, ground sloths, and saber-toothed cats of the not-too-distant past was almost heretical. Not only was there no irrefutable evidence that our species stretched so far back in time, but the very notion that we could have survived alongside such imposing Pleistocene mammals strained credulity. Contrary to what might be immediately expected, however, it was not Darwin's famous abstract On the…
laelaps | February 28, 2010
An American avocet (Recurvirostra americana), photographed at Antelope Island, Utah.
laelaps | February 27, 2010
Male (right) and female (left, with infant) friends in a population of Chacma baboons. (From Palombit, 2009).
Among other things, friends are people you count on to come to your aid when you need help. If you were at a bar and a stranger started acting aggressively towards you, for example, you would expect your friends to rush over to help you rather than just stand there, mojito in hand. Contrary to our feelings of human exceptionalism, however, ours is not the only species of primate to create and maintain friendships.
For years primatologists have been puzzling over "friendship" in…
laelaps | February 26, 2010Today is my 27th birthday. To celebrate Tracey and I were planning on visiting Philadelphia's Mutter Museum and the Academy of Natural Sciences, but given the deep accumulation of snow we thought better of going into the city. I can still celebrate by sharing something with you, though. Presented below is the cover of my forthcoming book Written in Stone: Evolution, the Fossil Record, and Our Place in Nature.
And, in related news, I am dusting off the old "Best of Laelaps" anthology project. It is tentatively-titled Giant Killer Lungfish From Hell and Other Tales From Deep Time, and it will…
laelaps | February 25, 2010
When it comes to nature documentaries the BBC's natural history unit is the best of the best. Over and over again they have produced top-notch programming, and their new multi-part series Life is perhaps the best I have ever seen. The series contains some familiar moments, such as a sengi running down its carefully-groomed pathways, but the bulk of the series consists of vignettes that I have never seen on screen before. One of the most compelling is the story of the slow death of a water buffalo at the jaws of a horde of patient Komodo dragons, a portion of which I have posted above.
I…
laelaps | February 24, 2010
A Cuban crocodile (Crocodylus rhombifer), photographed at the National Zoo in Washington, DC.
laelaps | February 24, 2010
A Cuban crocodile (Crocodylus rhombifer), photographed at the National Zoo in Washington, DC.
No one knew what happened to William Olson. At about three in the afternoon on April 13, 1966 he had been swimming with his friends from the Peace Corps in the part of the Baro river that ran through Gambela, Ethiopia when he suddenly disappeared. The last person to remember seeing him was hunter Karl Luthy. One moment Olson was standing in the river, pressing his body against the current, and the next he was gone.
Luthy could not be sure, but he was almost certain that Olson had been taken by a…
laelaps | February 23, 2010
A reconstruction of a dead Edmontosaurus on display at the Museum of Ancient Life at Thanksgiving Point, Utah.