It starts before ice-out in the north—Canada Geese arrive and plan for their spring nest. The early birds get the best nesting spots, often on a beaver lodge, like this pair. The gander defends his territory impressively, driving off other hopeful pairs of geese. Forming a lifetime bond,...

Killdeer are one of the most familiar plovers running the grounds in North America. Named for their vocalization, they are active both day and night. They will often visit well-lit ball fields and parks in the evenings, where they are quite social and vocal. Considered shorebirds, any water...

After wintering in Central America, these Baltimore Orioles have selected a perfect nesting spot; high in a cottonwood tree. The Female Oriole alone weaves the nest for the brood. It can take her a week or more to construct the sturdy, tightly woven basket. Using grasses, bark, wool and even...

Tree Swallows are cavity nesters. Choice locations are holes in trees, but they readily take to man-made nest boxes. The male diligently guards the nest box from predators such as House Sparrows or Red Squirrels, while the female builds the nest and incubates. Young swallows spend most of...