Cavity Nesting Birds of North America and Their Babies!
JULY 18, 2012
Bufflehead ( Bucephala albeola ) Female at Cavity Entrance photos by Larry Jordan “Some 85 species of North American birds excavate nesting holes, use cavities resulting from decay (natural cavities), or use holes created by other species in dead or deteriorating trees. Now the only falcon that regularly nests in natural cavities is the smallest and most common falcon in North America, the American Kestrel ( Falco sparverius ). Cavity-nesting Birds of North American Forests.