Hummingbirds. The nest of the bee hummingbird, the smallest bird in the world, is only 3cm in diameter.
a oven bird builds a nest like a sparrow.
Oriole
birds
Fantail
Swallows? Swallows?
A Cukoo Bird builds it's nest in a chimney
if you like bird feces
nest
cattle bird
The Weaver builds a nest out of grasses, with the entrance at the bottom.
an eagle builds a nest called an aerie
penguins don't build nests
The nests of cave swifts are used in bird's nest soup.
What if? You can't really do anything, just don't mess with the eggs or nest.
egrets they are called egrets
6-8 weeks