- Taczanowski's Brushfinch
- Taczanowski's Ground Tyrant
- Tawny Tit-Spinetail
- Thick-billed Euphonia
- Thorn-tailed Rayadito
- Three-banded Warbler
- Thrush Nightingale
- Torrent Tyrannulet
- Tree Pipit
- Tricolored Brushfinch
- Tricolored Heron
- Tropical Kingbird
- Tropical Parula
- Tropical Royal Flycatcher
- Tufted Tit-Tyrant
- Tumbes Hummingbird
- Tumbes Swallow
- Tumbes Tyrant
- Turkey Vulture
- Tyrian Metaltail