Endangered Siberian tigers number less than 500 in the wild. Zoos are working to keep the species alive, including through artificial insemination.

Photo by Mehgan Murphy, courtesy National Zoo Break out the pink bows, the National Zoo’s newly hatched brown kiwi chick is a girl. While the little bird hatched a few weeks ago, the Zoo announced just yesterday that they’ve determined its gender. The Zoo is excited about this for a number of reasons, including the fact that “there are more than twice as many male brown kiwis outside New Zealand as female” and the…

Photo by Mehgan Murphy, courtesy National Zoo. This baby brown kiwi may not be quite as cute as a clouded leopard cub, but its birth Tuesday morning at the Smithsonian’s National Zoo’s Bird House was a pretty big deal. Brown kiwis are one of the world’s most endangered species, and this was only the fourth time ever that a kiwi has successfully hatched at the Zoo. Only four zoos outside of New Zealand have…