Originally this is the Long-whiskered Owlet expedition which actually failed (bird heard only?) – but this was a nice push to build up my Neotropic experience. These families now on the list:
124. Family #46: Seedsnipes (Thinocoridae) | Least Seedsnipe
125. Family #60: Penguins (Spheniscidae) | Magellanic Penguin (photographed in Argentina, Humboldt Penguin ticked in Peru)
126. Family #100: Toucans (Ramphastidae) | Red-breasted Toucan (photographed in Brazil, Southern Emerald-Toucanet ticked in Peru)
127. Family #116: Crescentchests (Melanopareiidae) | Collared Crescentchest (photographed in Brazil, Elegant Crescentchest ticked in Peru)
128. Family #119: Tapaculos (Rhinocryptidae) | Slaty Bristlefront (photographed in Brazil, White-breasted Tapaculo ticked in Peru)
129. Family #123: Cotingas (Cotingidae) | Green-and-black Fruiteater
130. Family #124: Tityras and Allies (Tityridae) | White-winged Becard (photographed in Argentina, Barred Becard ticked in Peru)
131. Family #204: Gnatcatchers (Polioptilidae) | Masked Gnatcatcher (photographed in Argentina, Tropical Gnatcatcher ticked in Peru)
| Tataupa Tinamou | Crypturellus tataupa | (heard only) |
| Cinnamon Teal | Anas cyanoptera | |
| White-cheeked Pintail | Anas bahamensis | |
| Ruddy Duck | Oxyura jamaicensis | |
| Speckled Chachalaca | Ortalis guttata | |
| White-tufted Grebe | Rollandia rolland | |
| Pied-billed Grebe | Podilymbus podiceps | |
| Great Grebe | Podiceps major | |
| Chilean Flamingo | Phoenicopterus chilensis | |
| Humboldt Penguin | Spheniscus humboldti | |
| Peruvian Booby | Sula variegata | |
| Neotropic Cormorant | Phalacrocorax brasilianus | |
| Red-legged Cormorant | Phalacrocorax gaimardi | |
| Guanay Cormorant | Phalacrocorax bougainvillii | |
| Peruvian Pelican | Pelecanus thagus | |
| Fasciated Tiger-Heron | Tigrisoma fasciatum | |
| Great Egret | Ardea alba | |
| Snowy Egret | Egretta thula | |
| Little Blue Heron | Egretta caerulea | |
| Western Cattle Egret | Bubulcus ibis | |
| Striated Heron | Butorides striata | |
| Black-crowned Night-Heron | Nycticorax nycticorax | |
| Puna Ibis | Plegadis ridgwayi | |
| Black Vulture | Coragyps atratus | |
| Turkey Vulture | Cathartes aura | |
| Pearl Kite | Gampsonyx swainsonii | |
| Savanna Hawk | Buteogallus meridionalis | |
| Roadside Hawk | Rupornis magnirostris | |
| Harris’s Hawk | Parabuteo unicinctus | |
| Variable Hawk | Geranoaetus polyosoma | |
| Black-chested Buzzard-Eagle | Geranoaetus melanoleucus | |
| Zone-tailed Hawk | Buteo albonotatus | |
| Plumbeous Rail | Pardirallus sanguinolentus | |
| Common Gallinule | Gallinula galeata | |
| Slate-colored Coot | Fulica ardesiaca | |
| Peruvian Thick-knee | Burhinus superciliaris | |
| White-backed Stilt | Himantopus melanurus | |
| American Oystercatcher | Haematopus palliatus | |
| Blackish Oystercatcher | Haematopus ater | |
| Black-bellied Plover | Pluvialis squatarola | |
| Tawny-throated Dotterel | Oreopholus ruficollis | |
| Pied Lapwing | Vanellus cayanus | |
| Snowy Plover | Charadrius nivosus | |
| Semipalmated Plover | Charadrius semipalmatus | |
| Least Seedsnipe | Thinocorus rumicivorus | |
| Wattled Jacana | Jacana jacana | |
| Greater Yellowlegs | Tringa melanoleuca | |
| Willet | Tringa semipalmata | |
| Whimbrel | Numenius phaeopus | |
| Ruddy Turnstone | Arenaria interpres | |
| Sanderling | Calidris alba | |
| Gray-hooded Gull | Chroicocephalus cirrocephalus | |
| Gray Gull | Leucophaeus modestus | |
| Laughing Gull | Leucophaeus atricilla | |
| Belcher’s Gull | Larus belcheri | |
| Kelp Gull | Larus dominicanus | |
| Yellow-billed Tern | Sternula superciliaris | |
| Peruvian Tern | Sternula lorata | |
| Inca Tern | Larosterna inca | |
| Common Tern | Sterna hirundo | |
| South American Tern | Sterna hirundinacea | |
| Royal Tern | Thalasseus maximus | |
| Black Skimmer | Rynchops niger | |
| Rock Pigeon | Columba livia | |
| Band-tailed Pigeon | Patagioenas fasciata | |
| Peruvian Pigeon | Patagioenas oenops | |
| Plumbeous Pigeon | Patagioenas plumbea | |
| West Peruvian Dove | Zenaida meloda | |
| Eared Dove | Zenaida auriculata | |
| Ecuadorian Ground-Dove | Columbina buckleyi | |
| Croaking Ground-Dove | Columbina cruziana | |
| Blue Ground-Dove | Claravis pretiosa | |
| Bare-faced Ground-Dove | Metriopelia ceciliae | |
| White-tipped Dove | Leptotila verreauxi | |
| Squirrel Cuckoo | Piaya cayana | |
| Striped Cuckoo | Tapera naevia | |
| Groove-billed Ani | Crotophaga sulcirostris | |
| Peruvian Screech-Owl | Megascops roboratus | |
| Cinnamon Screech-Owl | Megascops petersoni | (heard only) |
| White-throated Screech-Owl | Megascops albogularis | (heard only) |
| Peruvian Pygmy-Owl | Glaucidium peruanum | |
| Long-whiskered Owlet | Xenoglaux loweryi | (heard only) |
| Burrowing Owl | Athene cunicularia | |
| Lesser Nighthawk | Chordeiles acutipennis | |
| Rufous-bellied Nighthawk | Lurocalis rufiventris | (heard only) |
| Scrub Nightjar | Nyctidromus anthonyi | |
| Swallow-tailed Nightjar | Uropsalis segmentata | |
| Chestnut-collared Swift | Streptoprocne rutila | |
| White-collared Swift | Streptoprocne zonaris | |
| White-tipped Swift | Aeronautes montivagus | |
| Green-fronted Lancebill | Doryfera ludovicae | |
| Lesser Violetear | Colibri cyanotus | |
| Sparkling Violetear | Colibri coruscans | |
| Purple-throated Sunangel | Heliangelus viola | |
| Royal Sunangel | Heliangelus regalis | |
| Ecuadorian Piedtail | Phlogophilus hemileucurus | |
| Speckled Hummingbird | Adelomyia melanogenys | |
| Long-tailed Sylph | Aglaiocercus kingi | |
| Emerald-bellied Puffleg | Eriocnemis aline | |
| Marvelous Spatuletail | Loddigesia mirabilis | |
| Bronzy Inca | Coeligena coeligena | |
| Collared Inca | Coeligena torquata | |
| Sword-billed Hummingbird | Ensifera ensifera | |
| Chestnut-breasted Coronet | Boissonneaua matthewsii | |
| Peruvian Racket-tail | Ocreatus underwoodii | |
| Fawn-breasted Brilliant | Heliodoxa rubinoides | |
| Purple-collared Woodstar | Myrtis fanny | |
| Oasis Hummingbird | Rhodopis vesper | |
| Peruvian Sheartail | Thaumastura cora | |
| White-bellied Woodstar | Chaetocercus mulsant | |
| Little Woodstar | Chaetocercus bombus | |
| Spot-throated Hummingbird | Leucippus taczanowskii | |
| White-bellied Hummingbird | Amazilia chionogaster | |
| Amazilia Hummingbird | Amazilia amazilia | |
| Andean Emerald | Amazilia franciae | |
| Green Kingfisher | Chloroceryle americana | |
| Southern Emerald-Toucanet | Aulacorhynchus albivitta | |
| Speckle-chested Piculet | Picumnus steindachneri | |
| Scarlet-backed Woodpecker | Veniliornis callonotus | |
| Golden-olive Woodpecker | Colaptes rubiginosus | |
| Lineated Woodpecker | Dryocopus lineatus | |
| American Kestrel | Falco sparverius | |
| Peregrine Falcon | Falco peregrinus | |
| Scarlet-fronted Parakeet | Aratinga wagleri | |
| Mitred Parakeet | Aratinga mitrata | |
| Pacific Parrotlet | Forpus coelestis | |
| Red-billed Parrot | Pionus sordidus | |
| Speckle-faced Parrot | Pionus tumultuosus | |
| Barred Antshrike | Thamnophilus doliatus | |
| Chapman’s Antshrike | Thamnophilus zarumae | (heard only) |
| Collared Antshrike | Thamnophilus bernardi | |
| Variable Antshrike | Thamnophilus caerulescens | |
| Streak-headed Antbird | Drymophila striaticeps | |
| Marañon Crescentchest | Melanopareia maranonica | |
| Elegant Crescentchest | Melanopareia elegans | |
| Rusty-tinged Antpitta | Grallaria przewalskii | (heard only) |
| Chestnut Antpitta | Grallaria blakei | (heard only) |
| Rufous-vented Tapaculo | Scytalopus femoralis | |
| White-crowned Tapaculo | Scytalopus atratus | |
| Coastal Miner | Geositta peruviana | |
| Grayish Miner | Geositta maritima | |
| Thick-billed Miner | Geositta crassirostris | |
| Olivaceous Woodcreeper | Sittasomus griseicapillus | |
| Streak-headed Woodcreeper | Lepidocolaptes souleyetii | |
| Montane Woodcreeper | Lepidocolaptes lacrymiger | |
| Streaked Xenops | Xenops rutilans | |
| Streaked Tuftedcheek | Pseudocolaptes boissonneautii | |
| Pale-legged Hornero | Furnarius leucopus | |
| Surf Cinclodes | Cinclodes taczanowskii | |
| Buff-throated Foliage-gleaner | Automolus ochrolaemus | |
| Striped Treehunter | Thripadectes holostictus | |
| Spotted Barbtail | Premnoplex brunnescens | |
| Pearled Treerunner | Margarornis squamiger | |
| Rufous-fronted Thornbird | Phacellodomus rufifrons | |
| Cactus Canastero | Pseudasthenes cactorum | |
| Azara’s Spinetail | Synallaxis azarae | |
| Rufous Spinetail | Synallaxis unirufa | |
| Necklaced Spinetail | Synallaxis stictothorax | |
| Southern Beardless-Tyrannulet | Camptostoma obsoletum | |
| White-tailed Tyrannulet | Mecocerculus poecilocercus | |
| Mouse-colored Tyrannulet | Phaeomyias murina | |
| White-crested Elaenia | Elaenia albiceps | |
| Sierran Elaenia | Elaenia pallatangae | |
| Torrent Tyrannulet | Serpophaga cinerea | |
| Streak-necked Flycatcher | Mionectes striaticollis | |
| Olive-striped Flycatcher | Mionectes olivaceus | (heard only) |
| Slaty-capped Flycatcher | Leptopogon superciliaris | |
| Mottle-cheeked Tyrannulet | Phylloscartes ventralis | |
| Golden-faced Tyrannulet | Zimmerius chrysops | |
| Peruvian Tyrannulet | Zimmerius viridiflavus | |
| Tawny-crowned Pygmy-Tyrant | Euscarthmus meloryphus | |
| Gray-and-white Tyrannulet | Pseudelaenia leucospodia | |
| Black-throated Tody-Tyrant | Hemitriccus granadensis | |
| Cinnamon-breasted Tody-Tyrant | Hemitriccus cinnamomeipectus | |
| Johnson’s Tody-Flycatcher | Poecilotriccus luluae | |
| Common Tody-Flycatcher | Todirostrum cinereum | |
| Cinnamon Flycatcher | Pyrrhomyias cinnamomeus | |
| Cliff Flycatcher | Hirundinea ferruginea | |
| Bran-colored Flycatcher | Myiophobus fasciatus | |
| Black Phoebe | Sayornis nigricans | |
| Vermilion Flycatcher | Pyrocephalus rubinus | |
| Rufous-tailed Tyrant | Knipolegus poecilurus | |
| Tumbes Tyrant | Tumbezia salvini | |
| Short-tailed Field Tyrant | Muscigralla brevicauda | |
| Rufous Flycatcher | Myiarchus semirufus | |
| Pale-edged Flycatcher | Myiarchus cephalotes | |
| Brown-crested Flycatcher | Myiarchus tyrannulus | |
| Social Flycatcher | Myiozetetes similis | |
| Baird’s Flycatcher | Myiodynastes bairdii | |
| Tropical Kingbird | Tyrannus melancholicus | |
| Green-and-black Fruiteater | Pipreola riefferii | |
| Peruvian Plantcutter | Phytotoma raimondii | |
| Andean Cock-of-the-rock | Rupicola peruvianus | |
| Red-ruffed Fruitcrow | Pyroderus scutatus | |
| Barred Becard | Pachyramphus versicolor | |
| Chivi Vireo | Vireo chivi | |
| Rufous-browed Peppershrike | Cyclarhis gujanensis | |
| White-collared Jay | Cyanolyca viridicyanus | |
| Inca Jay | Cyanocorax yncas | |
| White-tailed Jay | Cyanocorax mystacalis | |
| Blue-and-white Swallow | Pygochelidon cyanoleuca | |
| Southern Rough-winged Swallow | Stelgidopteryx ruficollis | |
| Gray-breasted Martin | Progne chalybea | |
| Tumbes Swallow | Tachycineta stolzmanni | |
| White-winged Swallow | Tachycineta albiventer | |
| House Wren | Troglodytes aedon | |
| Mountain Wren | Troglodytes solstitialis | |
| Fasciated Wren | Campylorhynchus fasciatus | |
| Superciliated Wren | Cantorchilus superciliaris | |
| Sharpe’s Wren | Cinnycerthia olivascens | |
| Bar-winged Wood-Wren | Henicorhina leucoptera | |
| Gray-breasted Wood-Wren | Henicorhina leucophrys | |
| Chestnut-breasted Wren | Cyphorhinus thoracicus | |
| Tropical Gnatcatcher | Polioptila plumbea | |
| White-capped Dipper | Cinclus leucocephalus | |
| Andean Solitaire | Myadestes ralloides | |
| Great Thrush | Turdus fuscater | |
| Glossy-black Thrush | Turdus serranus | |
| Long-tailed Mockingbird | Mimus longicaudatus | |
| Yellowish Pipit | Anthus lutescens | |
| Three-striped Warbler | Basileuterus tristriatus | |
| Russet-crowned Warbler | Myiothlypis coronata | |
| Slate-throated Redstart | Myioborus miniatus | |
| Spectacled Redstart | Myioborus melanocephalus | |
| Magpie Tanager | Cissopis leverianus | |
| White-capped Tanager | Sericossypha albocristata | |
| Rufous-crested Tanager | Creurgops verticalis | |
| Black-eared Hemispingus | Hemispingus melanotis | |
| Drab Hemispingus | Hemispingus xanthophthalmus | |
| White-lined Tanager | Tachyphonus rufus | |
| Silver-beaked Tanager | Ramphocelus carbo | |
| Grass-green Tanager | Chlorornis riefferii | |
| Lacrimose Mountain-Tanager | Anisognathus lacrymosus | |
| Blue-winged Mountain-Tanager | Anisognathus somptuosus | |
| Yellow-throated Tanager | Iridosornis analis | |
| Yellow-scarfed Tanager | Iridosornis reinhardti | |
| Blue-gray Tanager | Thraupis episcopus | |
| Blue-capped Tanager | Thraupis cyanocephala | |
| Silvery Tanager | Tangara viridicollis | |
| Blue-necked Tanager | Tangara cyanicollis | |
| Spotted Tanager | Tangara punctata | |
| Blue-and-black Tanager | Tangara vassorii | |
| Beryl-spangled Tanager | Tangara nigroviridis | |
| Metallic-green Tanager | Tangara labradorides | |
| Paradise Tanager | Tangara chilensis | |
| Saffron-crowned Tanager | Tangara xanthocephala | |
| Flame-faced Tanager | Tangara parzudakii | |
| Green-and-gold Tanager | Tangara schrankii | |
| Golden Tanager | Tangara arthus | |
| Cinereous Conebill | Conirostrum cinereum | |
| White-sided Flowerpiercer | Diglossa albilatera | |
| Deep-blue Flowerpiercer | Diglossa glauca | |
| Masked Flowerpiercer | Diglossa cyanea | |
| Ash-breasted Sierra-Finch | Phrygilus plebejus | |
| Band-tailed Sierra-Finch | Phrygilus alaudinus | |
| Cinereous Finch | Piezorina cinerea | |
| Little Inca-Finch | Incaspiza watkinsi | |
| Collared Warbling-Finch | Poospiza hispaniolensis | |
| Saffron Finch | Sicalis flaveola | |
| Sulphur-throated Finch | Sicalis taczanowskii | |
| Blue-black Grassquit | Volatinia jacarina | |
| Parrot-billed Seedeater | Sporophila peruviana | |
| Drab Seedeater | Sporophila simplex | |
| Chestnut-throated Seedeater | Sporophila telasco | |
| Band-tailed Seedeater | Catamenia analis | |
| Red-crested Finch | Coryphospingus cucullatus | |
| Bananaquit | Coereba flaveola | |
| Streaked Saltator | Saltator striatipectus | |
| Bolivian Brush-Finch | Atlapetes rufinucha | |
| Yellow-browed Sparrow | Ammodramus aurifrons | |
| Rufous-collared Sparrow | Zonotrichia capensis | |
| Common Chlorospingus | Chlorospingus flavopectus | |
| White-winged Tanager | Piranga leucoptera | |
| Red-hooded Tanager | Piranga rubriceps | |
| Golden-bellied Grosbeak | Pheucticus chrysogaster | |
| Peruvian Meadowlark | Sturnella bellicosa | |
| Shiny Cowbird | Molothrus bonariensis | |
| White-edged Oriole | Icterus graceannae | |
| Yellow-tailed Oriole | Icterus mesomelas | |
| Scarlet-rumped Cacique | Cacicus uropygialis | |
| Yellow-rumped Cacique | Cacicus cela | |
| Russet-backed Oropendola | Psarocolius angustifrons | |
| Purple-throated Euphonia | Euphonia chlorotica | |
| Thick-billed Euphonia | Euphonia laniirostris | |
| Orange-bellied Euphonia | Euphonia xanthogaster | |
| Hooded Siskin | Spinus magellanicus | |
| House Sparrow | Passer domesticus |