Gallery AT DUSK IN North American forests, wood thrushes (Hylocichla mustelina) fill forests with a rising and falling “ee-oh-lay” song with a strange reverb. Like Tuvan throat singers, these pot-bellied brown birds have the ability to sing their own harmony and descant. Alas, wood thrush populations have dropped 55 percent since 1966, and […]


Impalas are fantastic jumpers. Credit: Albie Venter | Shutterstock Enlarge Impalas are medium-sized antelopes that look like a mix between a goat and a deer. They have long legs and necks and black, twisted horns. As members of the Bovidae family, they are related to goats, cattle and sheep. Size Impalas […]