But the grieving mother isn’t a person – she's southern resident orca Tahlequah J35, pushing her dead calf through the waters ...

The American dipper, a drab-looking bird no larger than a robin, is a splashy rarity: a songbird that swims and even walks underwater. This round-bodied gray bird with short wings and a stubby tail is ...

The birds have been in an environmental updraft since the early 2000s, when the U.S. government took them off its endangered species list.