| Podiceps taczanowskii | Junín grebe |
| Poliocephalus rufopectus | New Zealand dabchick |
| Polyplectron germaini | Germain's peacock-pheasant |
| Polyplectron inopinatum | Mountain peacock-pheasant |
| Polyplectron malacense | Malaysian peacock-pheasant |
| Polyplectron napoleonis | Palawan peacock-pheasant |
| Polysticta stelleri | Steller's eider |
| Polytelis swainsonii | Superb parrot |
| Pomarea dimidiata | Rarotonga flycatcher |
| Pomarea nigra | Tahiti monarch |
| Porphyrio hochstetteri | Takahe |
| Porzana atra | Henderson crake |
| Porzana palmeri | Laysan crake |
| Primolius couloni | Blue-headed macaw |
| Prioniturus luconensis | Green racquet-tail |
| Prionops gabela | Gabela helmet-shrike |
| Prionops poliolophus | Grey-crested helmet-shrike |
| Procellaria aequinoctialis | White-chinned petrel |
| Procellaria cinerea | Grey petrel |
| Procellaria westlandica | Westland petrel |
| Progne modesta | Galapagos martin |
| Prosobonia cancellata | Tuamotu sandpiper |
| Psephotus chrysopterygius | Golden-shouldered parrot |
| Psephotus haematonotus | Red-rumped parrot |
| Pseudibis davisoni | White-shouldered ibis |
| Pseudocalyptomena graueri | African green broadbill |
| Pseudochelidon eurystomina | African river-martin |
| Pseudonestor xanthophrys | Maui parrotbill |
| Psittacula eques | Mauritius parakeet |
| Psittacus erithacus | African grey parrot |
| Pterodroma baraui | Barau's petrel |
| Pterodroma cahow | Bermuda petrel |
| Pterodroma cookii | Cook's petrel |
| Pterodroma externa | Juan Fernández petrel |
| Pterodroma hasitata | Black-capped petrel |
| Pterodroma incerta | Atlantic petrel |
| Pterodroma longirostris | Stejneger's petrel |
| Pterodroma phaeopygia | Galapagos petrel |
| Pterodroma solandri | Providence petrel |
| Ptilinopus insularis | Henderson fruit-dove |
| Ptilinopus rarotongensis | Cook Islands fruit-dove |
| Puffinus bulleri | Buller's shearwater |
| Puffinus creatopus | Pink-footed shearwater |
| Puffinus griseus | Sooty shearwater |
| Pycnonotus zeylanicus | Straw-headed bulbul |
| Pyrrhula murina | Azores bullfinch |
| Pyrrhura cruentata | Blue-chested parakeet |
| Pyrrhura orcesi | El Oro parakeet |
