Site Report: Maipo River Mouth

Gray-flanked Cinclodes (Cinclodes oustaleti)

Coscoroba Swan (Coscoroba coscoroba)

Rufous-tailed Plantcutter (Phytotoma rara)

Chiloe Wigeon (Mareca sibilatrix)

Chilean Mockingbird (Mimus thenca)

Kelp Gull (Larus dominicanus) - 1st Winter

Snowy-crowned Tern (Sterna trudeaui)

River Mouth

Kingdom: Animals (37 records)

Phylum: Chordates (37 records)

Class: Birds (37 records)

Order: Anseriformes (4 records)
- Family: Swans, Geese, and Ducks
- Coscoroba Swan (Coscoroba coscoroba)
- Chiloe Wigeon (Mareca sibilatrix)
- Red Shoveler (Spatula platalea)
- Yellow-billed Pintail (Anas georgica)

Order: Cranes, Rails, and Allies (2 records)
- Family: Rails, Gallinules, and Allies
- Spot-flanked Gallinule (Porphyriops melanops)
- Red-gartered Coot (Fulica armillata)

Order: Hummingbirds and Swifts (1 record)
- Family: Hummingbirds
- Green-backed Firecrown (Sephanoides sephaniodes)

Order: Pelicans (8 records)
- Family: Cormorants
- Neotropic Cormorant (Nannopterum brasilianum)
- Family: Grebes
- White-tufted Grebe (Rollandia rolland)
- Family: Herons
- Snowy Egret (Egretta thula)
- Cocoi Heron (Ardea cocoi)
- Great Egret (Ardea alba)
- Family: Oystercatchers
- American Oystercatcher (Haematopus palliatus)
- Family: Pelicans
- Peruvian Pelican (Pelecanus thagus)
- Family: Stilts and Avocets
- Black-necked Stilt (Himantopus mexicanus)

Order: Perching Birds (14 records)
- Family: American Blackbirds and Orioles
- Yellow-winged Blackbird (Agelasticus thilius)
- Family: Mockingbirds, Thrashers, and Allies
- Chilean Mockingbird (Mimus thenca)
- Family: Old World Buntings
- Rufous-collared Sparrow (Zonotrichia capensis)
- Family: Ovenbirds and Woodcreepers
- Buff-winged Cinclodes (Cinclodes fuscus)
- Gray-flanked Cinclodes (Cinclodes oustaleti)
- Thorn-tailed Rayadito (Aphrastura spinicauda)
- Plain-mantled Tit-Spinetail (Leptasthenura aegithaloides)
- Family: Swallows
- Chilean Swallow (Tachycineta leucopyga)
- Blue-and-white Swallow (Pygochelidon cyanoleuca)
- Family: Tanagers and Allies
- Grassland Yellow-Finch (Sicalis luteola)
- Family: Thrushes and Allies
- Austral Thrush (Turdus falcklandii)
- Family: Tyrant Flycatchers
- Austral Negrito (Lessonia rufa)
- Rufous-tailed Plantcutter (Phytotoma rara)
- Family: Wrens
- Southern House Wren (Troglodytes musculus)

Order: Shorebirds and Allies (7 records)
- Family: Gulls, Terns, and Skimmers
- Black Skimmer (Rynchops niger)
- Gray Gull (Leucophaeus modestus)
- Kelp Gull (Larus dominicanus)
- Brown-hooded Gull (Chroicocephalus maculipennis)
- Franklin's Gull (Leucophaeus pipixcan)
- Snowy-crowned Tern (Sterna trudeaui)
- Family: Plovers
- Southern Lapwing (Vanellus chilensis)

Order: Vultures (1 record)
- Family: New World Vultures
- Turkey Vulture (Cathartes aura)