Reserva Ecológica Costanera Sur

Sitio realizado por aficionados a la observación de aves desde 10 de enero 2006

White-tufted Grebe - Rollandia rolland

Order: Podicipediformes - Family: Podicipedidae Habitat: Ponds


Todos los registros desde Enero 2014

Adult
Macá común/White-tufted Grebe25 4 15 © J. Simón Tagtachian
Basic or non-breeding Plumage
.Brown. Darker on back. Macá común/White-tufted Grebe20 6 15 © Claudia y Tito Di Mauro
White throat. Light bill
Macá común/White-tufted Grebe18 4 14 © J. Simón Tagtachian
Legs are placed at the back
Macá común/White-tufted Grebe20 6 15 © J. Simón Tagtachian
Ventral wing white
Macá común/White-tufted Grebe 12 1 14 © J. Simón Tagtachian
Alternate or breeding plumage
Darkened. Black throat. Black bill with a large white tuft

Pairs and groups
Macá común/White-tufted Grebe9 2 14 © J. Simón Tagtachian
They separate from groups to breed
Macá común/White-tufted Grebe27 3 15 © Gustavo F. Brahamian
In general in groups out of the breeding season

Breeding

The nest

5 y 12 setiembre 2010 © Roberto Ares We discovered the grebe building the nest on September 5th. During most of that day's recording only one adult worked on the nest. Since male and female can not be told apart we do not know who was. The other adult appeared only on two occasions. On one of them it brought material. The nest is rudimentary. On floating vegetation vegetal material is piled up. From time to time it sat on the nest moulding it with the body and in the process accomodates the material. On 12th an adult is already incubating. It turns the eggs as customary in birds. It gives the impression that it repeats the action more than once, but there is only one white egg on sight.

7-9-14 © Silvia Loiacono


Chick and juvenile
Macá común/White-tufted Grebe29 3 14 © J. Simón Tagtachian Macá común/White-tufted Grebe29 3 14 © J. Simón Tagtachian
Macá común/White-tufted Grebe29 3 14 © J. Simón Tagtachian Macá común/White-tufted Grebe2 4 14 © Claudia y Tito Di Mauro
Macá común/White-tufted Grebe2 4 14 © Claudia y Tito Di Mauro Macá común/White-tufted Grebe5 4 14 © Elsa y Guillermo
Macá común/White-tufted Grebe5 4 14 © Elsa y Guillermo Macá común/White-tufted Grebe18 4 14 © J. Simón Tagtachian
Macá común/White-tufted Grebe26 4 14 © J. Simón Tagtachian Macá común/White-tufted Grebe1 11 14 © J. Simón Tagtachian

 9-7-16 © Cora Rimoldi

Feeding a chick


© Claudia y Tito Di Mauro

© Cora Rimoldi

Foraging in group. The ones ahead dive and emerge at the back


© Silvia Loiacono

© Reginaldo Lejarraga

More photographic records since January 2013