- Pacific Antwren
- Pacific Flatbill
- Pacific Parrotlet
- Paddyfield Warbler
- Pale-billed Woodpecker
- Pale-breasted Spinetail
- Pale-breasted Thrush
- Pale-edged Flycatcher
- Pale-eyed Blackbird
- Pale-legged Hornero
- Pale-legged Warbler
- Pale-vented Pigeon
- Palkachupa Cotinga
- Pallas's Leaf Warbler
- Pallid Harrier
- Pallid Swift
- Palm Tanager
- Pampa Finch
- Panama Flycatcher
- Paradise Tanager
- Parasitic Jaeger
- Parrot-billed Seedeater
- Parrot Crossbill
- Patagonian Canastero
- Patagonian Mockingbird
- Pauraque
- Peach-fronted Parakeet
- Pearled Treerunner
- Pearly-vented Tody-Tyrant
- Pechora Pipit
- Pectoral Sandpiper
- Peregrine Falcon
- Peruvian Booby
- Peruvian Diving Petrel
- Peruvian Meadowlark
- Peruvian Pelican
- Peruvian Pipit
- Peruvian Plantcutter
- Peruvian Seaside Cinclodes
- Peruvian Sierra Finch
- Peruvian Thick-knee
- Pied-billed Grebe
- Pied Avocet
- Pied Plover
- Pied Wheatear
- Pin-tailed Sandgrouse
- Pine Grosbeak
- Pink-footed Goose
- Pink-footed Shearwater
- Pink-headed Warbler
- Pink-throated Becard
- Pintado Petrel
- Plain-colored Seedeater
- Plain-mantled Tit-Spinetail
- Plain Chachalaca
- Plain Swift
- Plate-billed Mountain Toucan
- Plum-throated Cotinga
- Plumbeous Antbird
- Plumbeous Kite
- Plumbeous Pigeon
- Plumbeous Rail
- Plumbeous Sierra Finch
- Plush-crested Jay
- Plushcap
- Pomarine Jaeger
- Prevost's Ground Sparrow
- Puna Ground Tyrant
- Puna Ibis
- Puna Miner
- Puna Plover
- Puna Snipe
- Puna Tapaculo
- Puna Teal
- Puna Tinamou
- Purple-backed Sunbeam
- Purple-bibbed Whitetip
- Purple-collared Woodstar
- Purple-crowned Fairy
- Purple-throated Euphonia
- Purple-throated Fruitcrow
- Purple-throated Mountaingem
- Purple-throated Sunangel
- Purple-throated Woodstar
- Purple Gallinule
- Purple Heron
- Purple Honeycreeper
- Purple Martin
- Purple Sandpiper
- Purplish Jay
- Pygmy Cormorant