Plus: experience life as a Toronto raccoon, red-throated loons learn an icy lesson, and orca use icebergs to scratch their itches

These iconic birds have added magic to the soundscapes of Canada’s lakes for millions of years — but will we hear them forever? 

Plus: muscle re-growing beetles, hitchhiking black widows, root farming pocket gophers and a 40th chick for the world’s oldest common loon