The pair is together again. The male has been alone for a while

With marbled swamp eel Synbranchus marmoratus

With marbled swamp eel Synbranchus marmoratus

At blue anise sage Salvia guaranitica

At blue anise sage Salvia guaranitica

Preening and then the chicks show

Feeding the chick

Photo taken from the fishermens' pier. Meeting with a rufescent tiger-heron

First record of parasitism by black-headed duck with the host. The black-headed duck is the only obligate parasite. It parasitizes many aquatic species and in this case the host is a rosy-billed pochard. Since July there have been frequent records of black-headed duck, which makes us presume there may appear more cases. So, when you spot any water bird family, check all chicks are the same. There may also be facultative parasitism.
According to the bibliography these ducklings leave their host parents very soon. This photo was taken in the Duck Pond from the burnt viewpoint. 

Two chicks at the same time. The yellow-winged blackbird feeding them and they claiming for more

It was with two chicks not seen in the photo

The whole family in its first flights. Six cygnets out of seven were able to prosper

An adult and two young. This family was the first to nest in the Duck Pond

Nesting in the Duck Pond

With a lesser yellowlegs behind

Anahí identified the song and located the bird. The rest photographed it.

Credit to Paula Amoroso. She saw the bird very far across the Canal Sudeste

Credit to Paula Amoroso. She saw the bird very far across the Canal Sudeste

Juvenile

The shorebirds blend so well on the ground that it is difficult to find them. In most cases we spot them when they are driven away by other birds as is this case with the great kiskadee

With black-backed stilt

With yellow-billed teal in front

With yellow and orange shields

Speculum

Underwing coverts

Taken during a field trip to collect arthropods for a zoology subject of the biology career at the FCEyN

Taken during a field trip to collect arthropods for a zoology subject of the biology career at the FCEyN

Hummingbirds normally connect to the flower with their bill as they hover. But they can also sit on the flower when the petals offer a standing platform

Hummingbirds normally connect to the flower with their bill as they hover. But they can also sit on the flower when the petals offer a standing platform

Feeding the chicks

Feeding the chicks

Feeding the chicks

With regenerated tail

With intact tail