- Ruffs ( Machetes pugnax )
- Ruddy Duck
- Ruby-throated Hummingbird
- Ruby-crowned Kinglet
- Rooster
- Robin
- Ringed Plover, and young ones
- Ring-billed Gull
- Red-winged Blackbird’s Nest
- Red-winged Blackbird
- Red-tailed Hawk
- Red-headed Woodpecker
- Red-eyed Vireo
- Red-eyed Towhee
- Red-breasted Plant-cutter
- Red-bellied Woodpecker
- Raven
- Putting fresh sand in the bird cage
- Purple Martin
- Prairie Chicken
- Polly the parrot
- Pine Siskin
- Pied-billed Grebe, Breeding Plumage
- Pied-billed Grebe
- Phororhacos, a Patagonian Giant of the Miocene
- Peregrine Falcon, and young ones
- Peacock
- Partridges
- Owl
- Owl
- Ostrich
- Osprey and Grakles
- On the Watch
- Olive-backed Thrush
- Of Peacocks, Ducks, and other Feathers of changeable colours
- Northern Water-thrush
- Nighthawk
- Nests of the Bottle bird
- Nests of Social Weavers
- Nest of the Chicadee
- Nest of Red-eyed Vireo
- Nest of Phœbe
- Nature's Four Methods of Making a Wing - Bat, Pteryodactyl, Archæopteryx, and Modern Bird
- Myrtle Warbler
- Mourning Dove
- Mother Robin
- Mother hen with her chicks
- Mother bird feeding young in nest
- More feathered Pets
- Mockingbird
- Marsh Hawk
- Many-coloured Ground Finch
- Loon, Breeding Plumage
- Long Eared Owl
- Loggerhead Shrike
- Little girl looking at the birds in the tree
- Lark Sparrow
- Lapwing ( Vanellus cristatus )
- Lapland Longspur
- Killdeer