Birds, bees, birch trees and more: all streaming now on CBC Gem Social Sharing CBC Docs · comments Rare Bird Alert Punk rock birder Paul Riss has the Latin names of over 240 bird species tattooed on his body. Birding, he says, is growing in popularity and a great way to explore the natural world and our place in it. Travel with him across North America as he meets a diverse tribe of birders and hunts for the rare saltmarsh sparrow, a species expected to be extinct within decades. One Million Trees Bitter cold, pouring rain and scorching hot sun — take a look at the "completely different, crazy world" of tree planting in British Columbia. Experienced planters will put thousands of trees into the ground a day, with some reaching a career high of one million trees.