- Pacific Black Duck
- Pacific Golden Plover
- Pacific Swallow
- Paddyfield Pipit
- Painted Stork
- Pale-billed Flowerpecker
- Pale-billed Woodpecker
- Pale-vented Pigeon
- Pallid Swift
- Palm Tanager
- Palm Warbler
- Pampa Finch
- Paradise Shelduck
- Parasitic Jaeger
- Patagonian Mockingbird
- Pearl-spotted Owlet
- Pearly-eyed Thrasher
- Pectoral Sandpiper
- Peruvian Booby
- Peruvian Pelican
- Peruvian Seaside Cinclodes
- Peruvian Sierra Finch
- Pheasant-tailed Jacana
- Piapiac
- Picazuro Pigeon
- Picui Ground Dove
- Pied-billed Grebe
- Pied Avocet
- Pied Bush Chat
- Pied Crow
- Pied Kingfisher
- Pied Stilt
- Pied Wheatear
- Pigeon Guillemot
- Pin-tailed Snipe
- Pin-tailed Whydah
- Pine Siskin
- Pink-backed Pelican
- Pink-footed Goose
- Pink-necked Green Pigeon
- Piping Plover
- Plain-colored Tanager
- Plain Chachalaca
- Plain Prinia
- Plain Xenops
- Plum-headed Parakeet
- Plumbeous Sierra Finch
- Plumbeous Water Redstart
- Prong-billed Barbet
- Puna Ibis
- Puna Miner
- Puna Plover
- Puna Teal
- Purple-rumped Sunbird
- Purple-throated Carib
- Purple-throated Cuckooshrike
- Purple-throated Mountaingem
- Purple Gallinule
- Purple Grenadier
- Purple Heron
- Purple Roller
- Purple Sandpiper
- Purple Sunbird
- Pygmy Cormorant
- Pygmy Falcon
- Pygmy Nuthatch