News - December 2011

Happy 2012!

Cora

Chotoy Spinetail
Schoeniophylax phryganophilus
18-12-11 © Roberto Ares

A species rarely seen at Costanera. This year the chotoy visited us and stayed to breed. The nest was very well camouflaged among the branches of a Roman cassie Acacia caven and covered with climbing plants on top. Its brownish colour and its distracting behaviour to go into or out of the nest made the follow up even more difficult. We did not see it leave and, all of a sudden, in it went. The movement of its long tail let us spot it. Some jumps from one branch to another and it got lost in the denseness. It moved so quickly that the video was slowed down to a quarter of the velocity and the bird encircled to be easily visualized. How many chicks? We do not know, but it made several trips to get food.


Solitary Black Cacique
Cacicus solitarius
Solitary Black Cacique
31-12-11 © Carlos González Ledo

The nest on the left has already produced a clutch, being fed at the moment, but back right there is another nest....

Red-eyed Vireo
Vireo olivaceus
Red-eyed Vireo
31-12-11 © Carlos González Ledo
Glittering-bellied Emerald
Chlorostilbon lucidus
Glittering-bellied Emerald
17-12-11 © Pablo Serur
Glittering-bellied Emerald
17-12-11 © Pablo Serur

Old records, new bird species Released or escaped individuals
Eurasian Collared Dove
Streptopelia decaocto
Tórtola turca/Eurasian Collared Dovecirca 2000 © Roberto Güller
Zebra Finch
Taeniopygia guttata
Diamante mandarín/Eurasian Collared Dovecirca 2000 © Roberto Güller

Rufous Hornero
Furnarius rufus
23-10-10 © Javier Menéndez

Every year we find shiny cowbird chicks being fed by foster parents. Here by the Rufous Hornero


White-winged Becard
Pachyramphus polychopterus
White-winged Becard
17-12-11 © Pablo Serur
White-winged Becard
17-12-11 © Pablo Serur
Scarlet-headed Blackbird
Amblyramphus holosericeus
Scarlet-headed Blackbird
10-10-11 © J. Simón Tagtachian
Scarlet-headed Blackbird
10-10-11 © J. Simón Tagtachian
Scarlet-headed Blackbird
15-10-11 © J. Simón Tagtachian
Scarlet-headed Blackbird
15-10-11 © J. Simón Tagtachian
Sayaca Tanager
Thraupis sayaca
Sayaca Tanager
17-10-11 © J. Simón Tagtachian
On the evening outing of 17th organized by RECS we saw the Scissor-tailed Nightjar and the Sayaca Tanager among other birds. As soon as we went in a heterogeneous group of birds were enjoying a bath in some pools of water on the Lizards Path. By the time we watched the nightjar it was almost dark and flash was not allowed to be used. Anyway the pair of nightjars did not seem to be worried by our presence and we stayed long watching them. They performed acrobatic raids in the air to engulf insects. But the male (bottom) exhibited a curious behaviour. It positioned parallel and head to head to the female, jumped and fell in the same place but looking backwards, then again to the head-to-head poisition. It repeated this figure another couple of times and they both flew away. A courtship display?
Scissor-tailed Nightjar
Hydropsalis torquata
Scissor-tailed Nightjar
17-10-11 © J. Simón Tagtachian
Scissor-tailed Nightjar
17-10-11 © J. Simón Tagtachian

Old records, new bird species to the site Released or escaped individuals
Tropical Pewee
Contopus cinereus
Burlisto chico/Tropical Peweecirca 2000 © Roberto Güller
Many-colored Chaco-Finch
Saltatricula multicolor
Pepitero chico/Many-colored Chaco-Finchcirca 2000 © Roberto Güller

Orange-backed Troupial
Icterus croconotus
Orange-backed Troupial
08-12-11 © J. Simón Tagtachian
Small-billed Elaenia
Elaenia parvirostris
Small-billed Elaenia
18-10-11 © Carlos González Ledo
Rufous Hornero
Furnarius rufus
Rufous Hornero
17-10-11 © J. Simón Tagtachian
Rufous Hornero
17-10-11 © J. Simón Tagtachian
Chalk-browed Mockingbird
Mimus saturninus
Chalk-browed Mockingbird
18-12-11 © Carlos González Ledo
Chalk-browed Mockingbird
18-12-11 © Carlos González Ledo
Chalk-browed Mockingbird
18-12-11 © Carlos González Ledo
Red-crested Cardinal
Paroaria coronata
Red-crested Cardinal
18-12-11 © Carlos González Ledo

Solitary Black Cacique
Cacicus solitarius
Solitary Black Cacique
18-12-11 © Carlos González Ledo
Solitary Black Cacique
18-12-11 © Carlos González Ledo
Solitary Black Cacique
31-12-11 © Carlos González Ledo

By 31 st they are already feeding chicks

Video about the Reserve

© Lucio Aquerreta

Greyish Baywing
Agelaioides badius
Greyish Baywing
08-12-11 © Carlos González Ledo
Screaming Cowbird
08-12-11 © Carlos González Ledo
Great Kiskadee
Pitangus sulphuratus
Great Kiskadee
10-12-11 © Roberto Ares
Scarlet-headed Blackbird
Amblyramphus holosericeus
Scarlet-headed Blackbird
18-12-11 © Carlos González Ledo
Scarlet-headed Blackbird
18-12-11 © Carlos González Ledo
Eared Dove
Zenaida auriculata
Eared Dove
27-11-11 © Carlos González Ledo
Eared Dove
Zenaida auriculata
Eared Dove
11-12-11 © Cora Rimoldi