Bay-winged Cowbird 8449.jpg Black Chested Buzzard-Eagle 7001.jpg Black Chested Buzzard-Eagle 7044.jpg Black-backed Grosbeak 7102.jpg Black-backed Grosbeak 7341.jpg Black-chinned Siskin female 8465.jpg Black-crested Finch 7410.jpg Black-faced Ibis 9000.jpg Blue and Yellow Tanager 7278.jpg Bran-colored Flycatcher 8539.jpg Brown and Yellow Marshbird 7807.jpg Brown-chested Martin 7902.jpg Cattle Tyrant 8757.jpg Chimango Caracara 8716.jpg Creamy-bellied Thrush 7724.jpg Crested Duck 1447.jpg Dolphin Gull non-breeding 9636.jpg Eared Dove 7469.jpg Fork-tailed Flycatcher 8241.jpg Giant Wood Rail 8349.jpg Glittering Bellied Emerald 7549.jpg Green-barred Woodpecker 7882.jpg Guilded Hummingbird 8165.jpg Guira Cuckoo 7009.jpg Hooded Siskin 8007.jpg Masked Yellowthroat 7644.jpg Mockingbird Chalk-browed 8644.jpg Monk Parakeet 7522.jpg Picui Ground Dove 7757.jpg Red-backed Hawk 7034.jpg Reserva Natural Otamendi 7760.jpg Rufous Bellied Thrush 8860.jpg Rufous Hornero 7743.jpg Rufous-collared Sparrow 8100.jpg Rusty-collared Seedeater 7389.jpg Saffron Finch 7238.jpg Scarlet-headed Blackbird 7082.jpg Solitary Black Cacique 7213.jpg Southern Lapwing 7088.jpg Southern Screamer 7061.jpg Spectacled Tyrant 8606.jpg Ultramarine Grosbeak 7145.jpg Upland Goose female chick 0692.jpg Upland Goose male 0704.jpg White-winged Becard 7829.jpg Yellow-billed Cardinal 7192.jpg Yellow-browed Tyrant 7696.jpg