News - August 2012


Fawn-breasted Tanager
Pipraeidea melanonota
Fawn-breasted Tanager
26-08-12 © J. Simón Tagtachian
Freckle-breasted Thornbird
Phacellodomus striaticollis
Freckle-breasted Thornbird
26-08-12 © J. Simón Tagtachian
Ultramarine Grosbeak
Cyanoloxia brissonii
Ultramarine Grosbeak
26-08-12 © Carlos González Ledo
Ultramarine Grosbeak
26-08-12 © Carlos González Ledo
Great Grebe
Podiceps major
Great Grebe
25-08-12 © J. Simón Tagtachian
Nenday Parakeet
Aratinga nenday
Nenday Parakeet
26-08-12 © Juan Pablo Muszkats

Eating the fruit of white cedar Melia azedarach

Roadside Hawk
Rupornis magnirostris
Roadside Hawk
26-08-12 © J. Simón Tagtachian
Roadside Hawk
26-08-12 © J. Simón Tagtachian
Sooty-fronted Spinetail
Synallaxis frontalis
Sooty-fronted Spinetail
25-08-12 © J. Simón Tagtachian

Tailless


Especie nueva para el sitio
Suiriri Flycatcher
Suiriri suiriri
Suiriri Flycatcher
25-08-12 © J. Simón Tagtachian
Suiriri Flycatcher
25-08-12 © J. Simón Tagtachian
Suiriri Flycatcher
25-08-12 © J. Simón Tagtachian

Vermilion Flycatcher
Pyrocephalus rubinus
Vermilion Flycatcher
25-08-12 © J. Simón Tagtachian
Vermilion Flycatcher
25-08-12 © J. Simón Tagtachian
Hepatic Tanager
Piranga flava
Hepatic Tanager
25-08-12 © J. Simón Tagtachian
Hepatic Tanager
25-08-12 © J. Simón Tagtachian
Yellow-billed Teal
Anas flavirostris
Yellow-billed Teal
25-08-12 © J. Simón Tagtachian

How nice to see a duck family again! Such a common scene some time ago!


Water in the Coypu Pond
agua en Coipos/Water in Coypu PondSee more photos on www.siyc.com.ar/fotonaturaleza/historia/fotos.php?archivo=20120818.inc © J. Simón Tagtachian

Ferruginous Pygmy-Owl
Glaucidium brasilianum
Ferruginous Pygmy-Owl
20-08-12 © J. Simón Tagtachian
Ferruginous Pygmy-Owl
20-08-12 © J. Simón Tagtachian
Grey-throated Warbling-Finch
Poospiza cabanisi
Grey-throated Warbling-Finch
20-08-12 © J. Simón Tagtachian
Grey-throated Warbling-Finch
20-08-12 © J. Simón Tagtachian
Snowy-crowned Tern
Sterna trudeaui
Snowy-crowned Tern
20-08-12 © J. Simón Tagtachian
Limpkin
Aramus guarauna
Limpkin
20-08-12 © J. Simón Tagtachian
Hooded Siskin
Spinus magellanicus
Hooded Siskin
04-08-12 © J. Simón Tagtachian
Hooded Siskin
04-08-12 © J. Simón Tagtachian
Cattle Tyrant
Machetornis rixosa
Cattle Tyrant
18-08-12 © J. Simón Tagtachian
Shiny Cowbird
Molothrus bonariensis
Shiny Cowbird
18-08-12 © J. Simón Tagtachian
White-tipped Dove
Leptotila verreauxi
White-tipped Dove
04-08-12 © J. Simón Tagtachian
Yellow-billed Teal
Anas flavirostris
Yellow-billed Teal
20-08-12 © J. Simón Tagtachian
Yellow-billed Teal
20-08-12 © J. Simón Tagtachian
Red-fronted Coot
Fulica rufifrons
Red-fronted Coot
20-08-12 © J. Simón Tagtachian
Blue-billed Black-Tyrant
Knipolegus cyanirostris
Blue-billed Black-Tyrant
04-08-12 © J. Simón Tagtachian

Green-winged Saltator
Saltator similis
Green-winged Saltator
28-07-12 © J. Simón Tagtachian
El mismo juvenil con una semana de diferencia
Green-winged Saltator
04-08-12 © J. Simón Tagtachian

White-rumped Swallow
Tachycineta leucorrhoa
White-rumped Swallow
03-08-12 © Claudia y Diego Bastías

Spotted two weeks ago but photographed recently. It was a small group of five. The first to arrive.

Brown-hooded Gull
Chroicocephalus maculipennis
Brown-hooded Gull
28-07-12 © J. Simón Tagtachian

The breeding season comes and we note that birds are more active. They seem to wake up.There are chases, displays, increase in vocalizations, etc. and there are also changes in their appearance, many of which pass unnoticed to the untrained eye. But the nuptial or alternate plumage leaps to the eye. This gull&rsquo;s nuptial or alternate plumage is a brown hood which covers its head, which is practically white in its basic (also called winter) plumage. <br />These changes are due to the preparation of the reproductive system for a new breeding cycle. Environmental factors such as day length, light intensity, temperature, etc regulate the activity of the pituitary gland which segregates the hormones which stimulate these changes. Late in the reproductive season these hormones are inhibited by others which curb all this efervescence till the next cycle

Striped Owl
Pseudoscops clamator
Striped Owl
12-08-12 © Juan Pablo Muszkats
Striped Owl
12-08-12 © Juan Pablo Muszkats
Campo Troupial
Icterus jamacaii
Campo Troupial
12-08-12 © Juan Pablo Muszkats