Featured records from Mariano Costa
Birds - Argentina
Grey Gull (Leucophaeus modestus)
in Camino sin nombrar (-41.182955, -71.374511), Río Negro, Argentina by Mariano Costa on 09/12/2025
Little Thornbird (Phacellodomus sibilatrix) [2 specimens]
in Concordia, Entre Ríos, Argentina by Mariano Costa on 19/08/2025
Chalk-browed Mockingbird (Mimus saturninus)
in San Carlos de Bariloche, Río Negro, Argentina by Mariano Costa on 31/10/2024
Sanderling (Calidris alba)
in Parque Nacional Nahuel Huapi, Río Negro, Argentina by Mariano Costa on 14/10/2024
Red-tailed Comet (Sappho sparganurus) [1 specimen]
in San Carlos de Bariloche, Río Negro, Argentina by Mariano Costa on 10/07/2024
White-tailed Kite (Elanus leucurus)
in Villaguay, Entre Ríos, Argentina by Mariano Costa on 27/06/2024
Northern Rockhopper Penguin (Eudyptes moseleyi)
in Área Natural Protegida Bahía de San Antonio, Río Negro, Argentina by Mariano Costa on 12/11/2023
Greater Yellowlegs (Tringa melanoleuca)
in San Carlos de Bariloche, Río Negro, Argentina by Mariano Costa on 10/10/2020
Lesser Yellowlegs (Tringa flavipes) [2 specimens]
in San Carlos de Bariloche, Río Negro, Argentina by Mariano Costa on 10/10/2020
Black-necked Swan (Cygnus melancoryphus)
in San Carlos de Bariloche, Río Negro, Argentina by Mariano Costa on 04/10/2020
Bobolink (Dolichonyx oryzivorus) [1 specimen]
in San Carlos de Bariloche, Río Negro, Argentina by Mariano Costa on 04/06/2020
Eastern Rockhopper Penguin (Eudyptes filholi)
in Área Natural Protegida Bahía de San Antonio, Río Negro, Argentina by Mariano Costa on 06/03/2019
" "
Black Skimmer (Rynchops niger)
in Río Grande, Tierra del Fuego, Argentina by Mariano Costa on 12/03/2016
Imperial Shag (Leucocarbo atriceps) [1 specimen]
in Parque Nacional Nahuel Huapi, Río Negro, Argentina by Mariano Costa on 29/10/2010
Birds - Chile
Fork-tailed Flycatcher (Tyrannus savana)
in Puyehue, Región de Los Lagos, Chile by Mariano Costa on 25/11/2025
Slender-billed Prion (Pachyptila belcheri) [20 specimens]
in Pacífico Sur, Región de Los Lagos, Chile by Mariano Costa on 31/08/2024
Patagonian Yellow Finch (Sicalis lebruni) [6 specimens]
in Bahía Inútil, Región de Magallanes y la Antártica Chilena, Chile by Mariano Costa on 23/09/2016
Common Diving Petrel (Pelecanoides urinatrix)
in Estrecho de Magallanes, Región de Magallanes y la Antártica Chilena, Chile by Mariano Costa on 19/06/2016
Birds - Italy
Sand Martin (Riparia riparia)
in Roma, Lazio, Italia by Mariano Costa on 20/06/2019
Mammals - Argentina
Common Dolphin (Delphinus delphis)
in Área Natural Protegida Bahía de San Antonio, Río Negro, Argentina by Mariano Costa on 24/10/2021
Culpeo (Lycalopex culpaeus)
in Parque Nacional Nahuel Huapi, Neuquén, Argentina by Mariano Costa on 12/01/2020
European Rabbit (Oryctolagus cuniculus) [1 specimen]
in Parque Nacional Nahuel Huapi, Neuquén, Argentina by Mariano Costa on 03/01/2020
American Mink (Neogale vison)
in Villa La Angostura, Neuquén, Argentina by Mariano Costa on 16/04/2015
Crab-eating Fox (Cerdocyon thous)
in Villaguay, Entre Ríos, Argentina by Mariano Costa on 23/02/2009
Brazilian White-eared Opossum (Didelphis albiventris)
in Villaguay, Entre Ríos, Argentina by Mariano Costa on 01/01/2000
Amphibians - Argentina
Red-spotted Toad (Rhinella rubropunctata)
in Parque Nacional Nahuel Huapi, Neuquén, Argentina by Mariano Costa on 01/02/2019