Birds

Penguins Hate Stuff

Birds and Blooms of the 50 States

The Bird Hour

Nature's invitation: Notes of a bird-gazer, North and South

Birds of Song and Story

The Grail Bird

Birds useful and birds harmful

The Bird Watcher in the Shetlands, with Some Notes on Seals—and Digressions

Antarctic Penguins: A Study of Their Social Habits

The Migration of Birds

Thoracic and Coracoid Arteries In Two Families of Birds, Columbidae and Hirundinidae

In Nesting Time

Birds of Britain

A Manual of Bird Study. A Description of Twenty-Five Local Birds with Study Options

Travels in a Tree-top

Bird Guide Water Birds, Game Birds, and Birds of Prey

Essays on early ornithology and kindred subjects

The Postnatal Development of Two Broods of Great Horned Owls (Bubo virginianus)

How to Tell the Birds from the Flowers: A Manual of Flornithology for Beginners

Egyptian Birds