Readers’ wildlife photos (and a video)

Once again we’re lucky to have a video sent by a reader. Dennis Hansen, a biologist at the Institute of Evolutionary Biology and Environmental Studies in Zurich, has sent us pictures and videos before from islands in the Indian Ocean. Here we have a reptile from the Aldabra Atoll, with these notes: I am slightly disturbed … Continue reading Readers’ wildlife photos (and a video)

More on swimming tortoises

by Greg Mayer Dennis Hansen, our Aldabra correspondent, sent Jerry a very nice video of a swimming Aldabra giant tortoise (Aldabrachelys gigantea). This immediately brought to mind what is, in my view, one of the most important recent papers in biogeography, “The first substantiated case of trans-oceanic tortoise dispersal” by Justin Gerlach, Catharine Muir, and … Continue reading More on swimming tortoises

Giant tortoises FTW

What better way to conclude Darwin Day than with some pictures of giant tortoises—not from the Galápagos, mind you, but an independently evolved case of island gigantism on Aldrabra in the Indian Ocean. The pictures come from biologist and reader Dennis Hansen from the Institute of Evolutionary Biology and Environmental Studies in Zurich. His explanation: … Continue reading Giant tortoises FTW