- Pacific-slope Flycatcher
- Pacific Elaenia
- Pacific Loon
- Pacific Parrotlet
- Pacific Pygmy Owl
- Pacific Royal Flycatcher
- Pacific Swallow
- Paddyfield Pipit
- Paint-billed Crake
- Painted Bunting
- Painted Whitestart
- Pale-billed Woodpecker
- Pale-breasted Spinetail
- Pale-breasted Thrush
- Pale-faced Bare-eye
- Pale-legged Hornero
- Pale-legged Leaf Warbler
- Pale-mandibled Aracari
- Pale-naped Brushfinch
- Pale-vented Pigeon
- Pale-vented Thrush
- Pale-winged Trumpeter
- Pallas's Gull
- Pallas's Leaf Warbler
- Pallas's Reed Bunting
- Pallas's Rosefinch
- Pallid Dove
- Palm Tanager
- Palm Warbler
- Palmchat
- Paltry Tyrannulet
- Pampa Finch
- Papuan Black Myzomela
- Papuan Frogmouth
- Papuan Mountain Pigeon
- Papuan Spine-tailed Swift
- Papuan White-eye
- Paradise Jacamar
- Paradise Tanager
- Parakeet Auklet
- Paramo Ground Tyrant
- Patagonian Mockingbird
- Patagonian Sierra Finch
- Peaceful Dove
- Peach-fronted Parakeet
- Pearled Treerunner
- Pearly-eyed Thrasher
- Pearly-vented Tody-Tyrant
- Pectoral Sandpiper
- Pectoral Sparrow
- Pelagic Cormorant
- Pere David's Snowfinch
- Peregrine Falcon
- Peruvian Booby
- Peruvian Meadowlark
- Peruvian Thick-knee
- Phainopepla
- Pheasant Coucal
- Philadelphia Vireo
- Philippine Bulbul
- Philippine Bush Warbler
- Philippine Eagle
- Philippine Falconet
- Philippine Hawk-Eagle
- Philippine Scops Owl
- Philippine Serpent Eagle
- Philippine Swiftlet
- Philippine Trogon
- Picazuro Pigeon
- Picui Ground Dove
- Pied-billed Grebe
- Pied Bush Chat
- Pied Falconet
- Pied Heron
- Pied Plover
- Pied Puffbird
- Pied Water Tyrant
- Pigeon Guillemot
- Pileated Parrot
- Pileated Woodpecker
- Pin-striped Tit-Babbler
- Pin-tailed Snipe
- Pine Flycatcher
- Pine Grosbeak
- Pine Siskin
- Pine Warbler
- Pink-rumped Rosefinch
- Pink-spotted Fruit Dove
- Pinnated Bittern
- Pinon's Imperial Pigeon
- Pinyon Jay
- Piratic Flycatcher
- Pitta-like Ground Roller
- Plain-backed Sparrow
- Plain-brown Woodcreeper
- Plain-colored Seedeater
- Plain-crested Elaenia
- Plain-tailed Wren
- Plain-winged Antshrike
- Plain-winged Woodcreeper
- Plain Antvireo
- Plain Laughingthrush
- Plain Pigeon
- Plain Prinia
- Plaintive Cuckoo
- Planalto Woodcreeper
- Plate-billed Mountain Toucan
- Plumbeous-backed Thrush
- Plumbeous Antbird
- Plumbeous Ibis
- Plumbeous Kite
- Plumbeous Pigeon
- Plumbeous Rail
- Plumbeous Sierra Finch
- Plumbeous Warbler
- Plumbeous Water Redstart
- Plumed Whistling Duck
- Plush-crested Jay
- Point-tailed Palmcreeper
- Pompadour Cotinga
- Prairie Warbler
- Prong-billed Barbet
- Prothonotary Warbler
- Przevalski's Redstart
- Puff-throated Babbler
- Puff-throated Bulbul
- Puna Canastero
- Puna Ground Tyrant
- Puna Ibis
- Puna Miner
- Puna Plover
- Puna Teal
- Purple-bellied Lory
- Purple-crowned Fairy
- Purple-tailed Imperial Pigeon
- Purple-throated Carib
- Purple-throated Euphonia
- Purple-throated Fruitcrow
- Purple-throated Sunangel
- Purple Cochoa
- Purple Finch
- Purple Gallinule
- Purple Honeycreeper
- Purple Martin
- Purple Sunbird
- Purplish-backed Jay
- Purplish Jay
- Purus Jacamar
- Pygmy Antwren
- Pygmy Nightjar
- Pygmy Nuthatch
- Pygmy Swiftlet
- Pyrrhuloxia