News - December 2013


Peregrine Falcon
Falco peregrinus
Peregrine Falcon
28-12-13 © J. Simón Tagtachian
Peregrine Falcon
28-12-13 © J. Simón Tagtachian
Peregrine Falcon
28-12-13 © J. Simón Tagtachian
Peregrine Falcon
28-12-13 © J. Simón Tagtachian

Flying very high over the Viamonte Access from the ICBC Bank tower. It hten flew to the RECS area to chase away a harrison's hawk which was approaching. There was a small struggle in the sky. 


White-browed Blackbird
Sturnella superciliaris
White-browed Blackbird
28-12-13 © J. Simón Tagtachian
White-browed Blackbird
28-12-13 © J. Simón Tagtachian

Works at Brasil endobras-GFB-30-12-13© Gustavo F Brahamian
New moth species: Rustic Sphinx
Manduca rustica
Manduca rustica/Rustic Sphinx Manduca rustica/Rustic Sphinx© J. Simón Tagtachian
Brazilian Guinea pig
Cavia aperea
Cuis grande/Brazilian Guinea pigTo judge from the red eyes this individual would be an albino © J. Simón Tagtachian

Nest building, new families and kids growing
Chalk-browed Mockingbird
Mimus saturninus
Chalk-browed Mockingbird
28-12-13 © J. Simón Tagtachian
Chestnut-capped Blackbird
Chrysomus ruficapillus
Chestnut-capped Blackbird
29-12-13 © J. Simón Tagtachian
Chestnut-capped Blackbird
29-12-13 © Carlos González Ledo

The chestnut-capped blackbird is carrying material to the nest which is added turning it around a cattail leaf. It seems the male begins the construction of the nest to seduce the female. After the material has been placed it normally stays near, sings and flatters.

Masked Gnatcatcher
Polioptila dumicola
Masked Gnatcatcher
28-12-13 © J. Simón Tagtachian
Double-collared Seedeater
Sporophila caerulescens
Double-collared Seedeater
28-12-13 © J. Simón Tagtachian
Common Gallinule
Gallinula galeata
Common Gallinule
28-12-13 © J. Simón Tagtachian
Common Gallinule
28-12-13 © J. Simón Tagtachian
Common Gallinule
28-12-13 © J. Simón Tagtachian
Gray-necked Wood-Rail
01-12-13 © J. Simón Tagtachian
A chick of another family
Red-fronted Coot
Fulica rufifrons
Red-fronted Coot
28-12-13 © J. Simón Tagtachian
Red-fronted Coot
28-12-13 © J. Simón Tagtachian
Red-fronted Coot
28-12-13 © J. Simón Tagtachian
Spot-flanked Gallinule
Gallinula melanops
Spot-flanked Gallinule
24-12-13 © J. Simón Tagtachian
Spot-flanked Gallinule
24-12-13 © J. Simón Tagtachian
European Starling
Sturnus vulgaris
European Starling
28-12-13 © J. Simón Tagtachian

A chick in a hole which belonged to a green-barred woodpecker

Rosy-billed Pochard
Netta peposaca
Rosy-billed Pochard
24-12-13 © J. Simón Tagtachian
White-rumped Swallow
Tachycineta leucorrhoa
White-rumped Swallow
28-12-13 © J. Simón Tagtachian
Gray-necked Wood-Rail
Aramides cajaneus
Gray-necked Wood-Rail
01-12-13 © J. Simón Tagtachian
White-tufted Grebe
Rollandia rolland
White-tufted Grebe
29-12-13 © Carlos González Ledo
Small-billed Elaenia
Elaenia parvirostris
Small-billed Elaenia
29-12-13 © Carlos González Ledo
Red-crested Cardinal
Paroaria coronata
Red-crested Cardinal
28-12-13 © J. Simón Tagtachian
Spectacled Tyrant
Hymenops perspicillatus
Spectacled Tyrant
28-12-13 © J. Simón Tagtachian
Guira Cuckoo
Guira guira
Guira Cuckoo
28-12-13 © Gustavo F. Brahamian

Dark eye and black culmen

Red-eyed Vireo
Vireo olivaceus
Red-eyed Vireo
29-12-13 © Carlos González Ledo
Scarlet-headed Blackbird
Amblyramphus holosericeus
Scarlet-headed Blackbird
28-12-13 © J. Simón Tagtachian

Pied-billed Grebe
Podilymbus podiceps
Pied-billed Grebe
15-12-13 © Carlos González Ledo

Chasing away a white-tufted grebe

Pied-billed Grebe
01-12-13 © Carlos González Ledo
A far too agressive pied-billed Grebe. The first victim was a solitary White-tufted Grebe. Then it split a family of White-tufted Grebes with chicks and finally, it was a pair of Silver Teal. To chase them out of the territory it seems to activate the outboard motor, it rises and skitters on the water with open wings. When the opponent crosses the border it lands on the water
Pied-billed Grebe
15-12-13 © Carlos González Ledo
Pied-billed Grebe
15-12-13 © Carlos González Ledo
Pied-billed Grebe
15-12-13 © Carlos González Ledo



Campo Flicker
Colaptes campestris
Campo Flicker
28-12-13 © J. Simón Tagtachian

Sitting on the outer sidewalk of the reserve

Blue-and-yellow Tanager
Pipraeidea bonariensis
Blue-and-yellow Tanager
28-12-13 © J. Simón Tagtachian
Tropical Screech-Owl
Megascops choliba
Tropical Screech-Owl
29-12-13 © Carlos González Ledo
Wattled Jacana
Jacana jacana
Wattled Jacana
28-12-13 © Gustavo F. Brahamian
White-faced Ibis
Plegadis chihi
White-faced Ibis
28-12-13 © J. Simón Tagtachian
Bare-faced Ibis
Phimosus infuscatus
Bare-faced Ibis
25-12-13 © Carlos González Ledo
Yellow-browed Tyrant
Satrapa icterophrys
Yellow-browed Tyrant
28-12-13 © J. Simón Tagtachian
Unicolored Blackbird
Agelasticus cyanopus
Unicolored Blackbird
28-12-13 © J. Simón Tagtachian
Unicolored Blackbird
Agelasticus cyanopus
Unicolored Blackbird
28-12-13 © J. Simón Tagtachian
Bran-colored Flycatcher
Myiophobus fasciatus
Bran-colored Flycatcher
28-12-13 © J. Simón Tagtachian
Gilded Hummingbird
Hylocharis chrysura
Gilded Hummingbird
28-12-13 © J. Simón Tagtachian
Chalk-browed Mockingbird
Mimus saturninus
Chalk-browed Mockingbird
28-12-13 © J. Simón Tagtachian

Drinking water at the new showers at Viamonte Access

White-lined Tanager
Tachyphonus rufus
White-lined Tanager
28-12-13 © J. Simón Tagtachian

White wing undercoverts

European Starling
Sturnus vulgaris
European Starling
28-12-13 © J. Simón Tagtachian

Leucistic individual

Warbling Doradito
Pseudocolopteryx flaviventris
Warbling Doradito
28-12-13 © J. Simón Tagtachian
Rosy-billed Pochard
Netta peposaca
Rosy-billed Pochard
01-12-13 © J. Simón Tagtachian
Southern Caracara
Caracara plancus
Southern Caracara
28-12-13 © J. Simón Tagtachian

Taking a bird as prey in the bill

Southern Caracara
28-12-13 © Gustavo F. Brahamian
Silver Teal
Anas versicolor
Silver Teal
28-12-13 © Gustavo F. Brahamian
Silver Teal
29-12-13 © Carlos González Ledo
White-faced Whistling-Duck
Dendrocygna viduata
White-faced Whistling-Duck
29-12-13 © Carlos González Ledo
Picui Ground Dove
Columbina picui
Picui Ground Dove
28-12-13 © J. Simón Tagtachian
Gilded Hummingbird
Hylocharis chrysura
Gilded Hummingbird
28-12-13 © J. Simón Tagtachian

Lapping up Manihot grahamii


Coscoroba Swan
Coscoroba coscoroba
Coscoroba Swan
22-12-13 © Carlos González Ledo
Coscoroba Swan
22-12-13 © Carlos González Ledo
Coscoroba Swan
22-12-13 © Carlos González Ledo
Coscoroba Swan
22-12-13 © Carlos González Ledo

Body language of this pair of coscoroba swan before mating. They move in circles alternatively pecking at the water as an invitation. The female is much smaller than the male.


Warbling Doradito
Pseudocolopteryx flaviventris
Warbling Doradito
25-12-13 © Carlos González Ledo
Scarlet-headed Blackbird
Amblyramphus holosericeus
Scarlet-headed Blackbird
22-12-13 © Carlos González Ledo
Tropical Screech-Owl
Megascops choliba
Tropical Screech-Owl
21-12-13 © J. Simón Tagtachian
El sábado estaba la pareja. El domingo había uno solo
Tropical Screech-Owl
Megascops choliba
Tropical Screech-Owl
22-12-13 © Carlos González Ledo
Many-colored Rush Tyrant
Tachuris rubrigastra
Many-colored Rush Tyrant
01-12-13 © Carlos González Ledo
White-winged Becard
Pachyramphus polychopterus
White-winged Becard
22-12-13 © Carlos González Ledo
White-eyed Parakeet
Psittacara leucophtalmus
White-eyed Parakeet
21-12-13 © J. Simón Tagtachian

Expecting, nursery and more juveniles
Picazuro Pigeon
Patagioenas picazuro
Picazuro Pigeon
21-12-13 © Amelia Besana
Small-billed Elaenia
Elaenia parvirostris
Small-billed Elaenia
22-12-13 © Carlos González Ledo
Small-billed Elaenia
22-12-13 © Carlos González Ledo
Gray-necked Wood-Rail
Aramides cajaneus
Gray-necked Wood-Rail
22-12-13 © Carlos González Ledo
Freckle-breasted Thornbird
Phacellodomus striaticollis
Freckle-breasted Thornbird
21-12-13 © J. Simón Tagtachian
Checkered Woodpecker
Veniliornis mixtus
Checkered Woodpecker
21-12-13 © J. Simón Tagtachian
The same nest. In the photo the father in the video the mother feeding the chick
21-12-13 © Amelia Besana



Gilded Hummingbird
Hylocharis chrysura
Gilded Hummingbird
21-12-13 © J. Simón Tagtachian
Giant Wood-Rail
Aramides ypecaha
Giant Wood-Rail
15-12-13 © Carlos González Ledo
Red-eyed Vireo
Vireo olivaceus
Red-eyed Vireo
15-12-13 © Carlos González Ledo
Unicolored Blackbird
Agelasticus cyanopus
Unicolored Blackbird
21-12-13 © Gustavo F. Brahamian
Unicolored Blackbird
21-12-13 © Gustavo F. Brahamian

Chestnut-capped Blackbird
Chrysomus ruficapillus
Chestnut-capped Blackbird
15-12-13 © Carlos González Ledo
Chestnut-capped Blackbird
15-12-13 © Carlos González Ledo
Chestnut-capped Blackbird
15-12-13 © Carlos González Ledo
Chestnut-capped Blackbird
15-12-13 © Carlos González Ledo
Chestnut-capped Blackbird
15-12-13 © Carlos González Ledo
Looking for material for the nest



Red-eyed Vireo
Vireo olivaceus
Red-eyed Vireo
15-12-13 © Carlos González Ledo
Gray-necked Wood-Rail
Aramides cajaneus
Gray-necked Wood-Rail
15-12-13 © Carlos González Ledo
House Wren
Troglodytes aedon
House Wren
14-12-13 © Gustavo F. Brahamian
Rufous-bellied Thrush
Turdus rufiventris
Rufous-bellied Thrush
15-12-13 © Carlos González Ledo

Weeding works Reserva Ecológica Costanera Sur - Buenos Aires 2013 RECS, obrasFotos © Gustavo Brahamian

Yellow-billed Teal
Anas flavirostris
Yellow-billed Teal
15-12-13 © Carlos González Ledo

There were five, now only four

Ringed Teal
Callonetta leucophrys
Ringed Teal
15-12-13 © Carlos González Ledo
Striated Heron
Butorides striata
Striated Heron
14-12-13 © Juan Pablo Muszkats
White-tufted Grebe
Rollandia rolland
White-tufted Grebe
15-12-13 © Carlos González Ledo
White-tufted Grebe
15-12-13 © Carlos González Ledo

These three grebe chicks are from the same clutch and exhibit differences both in plumage and loral colour. They are not the exact same since the egg is incubated as soon as it is laid. So the eggs will hatch with the same difference of time as they were laid


Costanera's nursery and more juveniles
White-tufted Grebe
Rollandia rolland
White-tufted Grebe
14-12-13 © Gustavo F. Brahamian
Green-barred Woodpecker
Colaptes melanochloros
Green-barred Woodpecker
12-12-13 © Nicolás Giorgio
Green-barred Woodpecker
14-12-13 © Gustavo F. Brahamian
Common Gallinule
Gallinula galeata
Common Gallinule
14-12-13 © Gustavo F. Brahamian
Gray-breasted Martin
Progne chalybea
Gray-breasted Martin
14-12-13 © Gustavo F. Brahamian
White-rumped Swallow
Tachycineta leucorrhoa
White-rumped Swallow
12-12-13 © Nicolás Giorgio
Plumbeous Rail
Pardirallus sanguinolentus
Plumbeous Rail
08-12-13 © Carlos González Ledo
Red-crested Cardinal
Paroaria coronata
Red-crested Cardinal
08-12-13 © Carlos González Ledo



White-eyed Parakeet
Psittacara leucophtalmus
White-eyed Parakeet
01-12-13 © Carlos González Ledo

Eating mulberry

Rufescent Tiger-Heron
Tigrisoma lineatum
Rufescent Tiger-Heron
08-12-13 © Carlos González Ledo
Spectacled Tyrant
Hymenops perspicillatus
Spectacled Tyrant
08-12-13 © Carlos González Ledo
Coscoroba Swan
Coscoroba coscoroba
Coscoroba Swan
14-12-13 © J. Simón Tagtachian
Cattle Tyrant
Machetornis rixosa
Cattle Tyrant
11-12-13 © Nicolás Giorgio
Wren-like Rushbird
Phleocryptes melanops
Wren-like Rushbird
14-12-13 © J. Simón Tagtachian
Streaked Flycatcher
Myiodynastes maculatus
Streaked Flycatcher
15-12-13 © Carlos González Ledo
Saffron Finch
Sicalis flaveola
Saffron Finch
14-12-13 © J. Simón Tagtachian
Small-billed Elaenia
Elaenia parvirostris
14-12-13 © Cora Rimoldi



Masked Duck
Nomonyx dominicus
Masked Duck
07-12-13 © J. Simón Tagtachian
Masked Duck
07-12-13 © J. Simón Tagtachian
Masked Duck
07-12-13 © J. Simón Tagtachian



Pekin Duck
Anas platyrhynchos domesticus
Pato Pekin/Pekin Duck © J. Simón Tagtachian
Domesticated species living in the wild again

Yellow-chevroned Parakeet
Brotogeris chiriri
Yellow-chevroned Parakeet
10-12-13 © Nicolás Giorgio



Duckling scouts

Yellow-billed Teal
Anas flavirostris
Yellow-billed Teal
08-12-13 © Carlos González Ledo
Yellow-billed Teal
08-12-13 © Carlos González Ledo

Out of the grasses which surround the water tank this Indian file came out apparently with a broken compass. They crossed the plant nursery in an opposite direction to the river, that is they were walking towards the street. Finally they got in the vegetation again with a very uncertain destination. The yellow-billed teal nests in tree holes and when ducklings are ready they fall to the ground.



Narrow-billed Woodcreeper
Lepidocolaptes angustirostris
Narrow-billed Woodcreeper
10-12-13 © José Luis Merlo
Hear the petition voice © José Luis Merlo
Brown-chested Martin
Progne tapera
Brown-chested Martin
08-12-13 © J. Simón Tagtachian
Roadside Hawk
Rupornis magnirostris
Roadside Hawk
07-12-13 © Juan Pablo Muszkats

Ringed

Pied-billed Grebe
Podilymbus podiceps
Pied-billed Grebe
07-12-13 © Nicolás Giorgio

With a frog in the bill

Guira Cuckoo
Guira guira
Guira Cuckoo
07-12-13 © J. Simón Tagtachian

Eating caterpillar Pseudoautomeris grammivora

Yellow-winged Blackbird
Agelasticus thilius
Yellow-winged Blackbird
07-12-13 © J. Simón Tagtachian
Yellow-winged Blackbird
Agelasticus thilius
Yellow-winged Blackbird
07-12-13 © J. Simón Tagtachian
Chestnut-capped Blackbird
Chrysomus ruficapillus
Chestnut-capped Blackbird
07-12-13 © J. Simón Tagtachian
Chestnut-capped Blackbird
Chrysomus ruficapillus
Chestnut-capped Blackbird
07-12-13 © J. Simón Tagtachian
Campo Troupial
Icterus jamacaii
Campo Troupial
08-12-13 © J. Simón Tagtachian
White-eyed Parakeet
Psittacara leucophtalmus
White-eyed Parakeet
08-12-13 © J. Simón Tagtachian
White-eyed Parakeet
08-12-13 © J. Simón Tagtachian

Eating mulberry

White-crested Tyrannulet
Serpophaga subcristata
White-crested Tyrannulet
08-12-13 © Carlos González Ledo



Neotropic Cormorant
Phalacrocorax brasilianus
Neotropic Cormorant
08-12-13 © J. Simón Tagtachian
The Neotropic Cormorant belongs in the family Phalacrocoracidae. Up to 2010 this family together with the families Phaethontidae, Fregatidae, Pelecanidae, Anhingidae and Sulidae were included within the Order Pelecaniformes. One morphological characteristic bonded them all. All of them and only they have the four toes palmated. There are other families with palmated toes such as ducks, but they have only three out of the four toes palmated, remaining one of them free. However, genetic studies have shown that they are not so close as they were believed to be and these families have been rearranged as follows. The Phaetontidae (tropical brids not found in Argentina) were isolated in the Order Phaethontiformes. The Pelecanidae (pelicans, neither in Argentina) remained in the Pelecaniformes and the four remaining ones Fregatidae (fregatebird), Sulidae (boobies), Anhingidae (anhinga) and Phalacrocoracidae (cormorant), have been placed into a new order named Suliformes. These four families are represented in Argentina and but for boobies we have records of the other three in Costanera.

Works at Brasil Trabajos-Entrada-Brasil-12-Work progress at Coypu Pond: the dredge is being mounted (basically a pontoon excavator) to begin dredging the pond this week or at the beginning of the following one. Works will start from the Brasil Access. There is no estimated deadline date since working pace (pumping and refilling) are variable. Dredging will be performed transversally in the sense of sedimentation by which depth of water declines from the outer border of the pond (Pto. Madero) to the inner one (Lizard Path). (Information provided by COARECS) Photo © Nicolás Giorgio



Fork-tailed Flycatcher
Tyrannus savana
Fork-tailed Flycatcher
07-12-13 © Nicolás Giorgio
Golden-crowned Warbler
Basileuterus culicivorus
Golden-crowned Warbler
07-12-13 © Nicolás Giorgio
Greyish Baywing
Agelaioides badius
Greyish Baywing
08-12-13 © J. Simón Tagtachian

In the nest

Creamy-bellied Thrush
Turdus amaurochalinus
Creamy-bellied Thrush
01-12-13 © J. Simón Tagtachian
Spot-flanked Gallinule
Gallinula melanops
Spot-flanked Gallinule
01-12-13 © Carlos González Ledo
Spot-flanked Gallinule
01-12-13 © Carlos González Ledo
Spot-flanked Gallinule
01-12-13 © Gustavo F. Brahamian

Fight between spot-flanked gallinules
Fight between spot-flanked gallinules
Read more

Yellow-billed Teal
Anas flavirostris
Yellow-billed Teal
01-12-13 © Carlos González Ledo
Yellow-billed Teal
01-12-13 © Carlos González Ledo
Coscoroba Swan
Coscoroba coscoroba
Coscoroba Swan
02-12-13 © Nicolás Giorgio
Black-capped Warbling-Finch
Poospiza melanoleuca
Black-capped Warbling-Finch
01-12-13 © Carlos González Ledo
Bran-colored Flycatcher
Myiophobus fasciatus
Bran-colored Flycatcher
01-12-13 © Carlos González Ledo