News - December 2018

Felices fiestas 2019

Gaudy sphinx
Eumorpha labruscae
Gaudy sphinx
22-12-18 © María Victoria Di Stasio
This moth belongs in the family Sphingidae, subfamily Macroglossinae. It is nocturnal and feeds on grapevines
Gaudy sphinx
22-12-18 © Héctor Horacio García
Gaudy sphinx
22-12-18 © María Victoria Di Stasio
Gaudy sphinx
22-12-18 © Héctor Horacio García
Marcelo discovered this caterpillar crossing the road and called us. An impressive size. At fist sight some 10 cm. The coin serves as a reference. We surrounded it so as to keep it safe from passers-by or cyclists till the edge of the road.
Gaudy sphinx
22-12-18 © Javier Guillermo González

Picazuro Pigeon
Patagioenas picazuro
Picazuro Pigeon
30-12-18 © Sergio Cusano
Common Gallinule
Gallinula galeata
Common Gallinule
30-12-18 © Héctor García
Common Gallinule
30-12-18 © Sergio Cusano
Common Gallinule
30-12-18 © Sergio Cusano
Rosy-billed Pochard
Netta peposaca
Rosy-billed Pochard
30-12-18 © Sergio Cusano
Rosy-billed Pochard
30-12-18 © Héctor García
Spot-winged Pigeon
Patagioenas maculosa
Spot-winged Pigeon
30-12-18 © Sergio Cusano
Yellow-chinned Spinetail
Certhiaxis cinnamomeus
Yellow-chinned Spinetail
30-12-18 © Sergio Cusano
Brazilian Teal
Amazonetta brasiliensis
Brazilian Teal
30-12-18 © Héctor García
Brazilian Teal
30-12-18 © Héctor García
Limpkin
Aramus guarauna
Limpkin
30-12-18 © Sergio Cusano
Yellow-billed Cardinal
Paroaria capitata
Yellow-billed Cardinal
30-12-18 © Sergio Cusano
Mallard Duck
Anas platyrhynchos
Mallard Duck
30-12-18 © Héctor García
Monk Parakeet
Myiopsitta monachus
Monk Parakeet
30-12-18 © Héctor García
Monk Parakeet
30-12-18 © Sergio Cusano
Chestnut-capped Blackbird
Chrysomus ruficapillus
Chestnut-capped Blackbird
30-12-18 © Sergio Cusano



Plush-crested Jay
Cyanocorax chrysops
Plush-crested Jay
23-12-18 © Javier Guillermo González
Plush-crested Jay
23-12-18 © Javier Guillermo González
Plush-crested Jay
23-12-18 © Lucas de Ciria
Ferruginous Pygmy-Owl
Glaucidium brasilianum
Ferruginous Pygmy-Owl
23-12-18 © Gustavo F. Brahamian
Ferruginous Pygmy-Owl
23-12-18 © Gustavo F. Brahamian
Ferruginous Pygmy-Owl
23-12-18 © Gustavo F. Brahamian
Ferruginous Pygmy-Owl
23-12-18 © Javier Guillermo González
Ferruginous Pygmy-Owl
23-12-18 © Gustavo F. Brahamian
Ferruginous Pygmy-Owl
23-12-18 © Javier Guillermo González
Streaked Flycatcher
Myiodynastes maculatus
Streaked Flycatcher
23-12-18 © Javier Guillermo González
Checkered Woodpecker
Veniliornis mixtus
Checkered Woodpecker
23-12-18 © Javier Guillermo González
White-eyed Parakeet
Psittacara leucophtalmus
White-eyed Parakeet
23-12-18 © Román Montero
Sooty-fronted Spinetail
Synallaxis frontalis
Sooty-fronted Spinetail
23-12-18 © Román Montero
Ultramarine Grosbeak
Cyanoloxia brissonii
Ultramarine Grosbeak
23-12-18 © Román Montero
Ultramarine Grosbeak
23-12-18 © Javier Guillermo González
Fork-tailed Flycatcher
Tyrannus savana
Fork-tailed Flycatcher
23-12-18 © Román Montero
Fork-tailed Flycatcher
23-12-18 © Javier Guillermo González

Red-eyed Vireo
Vireo olivaceus
Red-eyed Vireo
22-12-18 © Javier Guillermo González
Spot-winged Pigeon
Patagioenas maculosa
Spot-winged Pigeon
22-12-18 © Héctor Horacio García
Yellow-browed Tyrant
Satrapa icterophrys
Yellow-browed Tyrant
15-12-18 © Javier Guillermo González
Fork-tailed Flycatcher
Tyrannus savana
Fork-tailed Flycatcher
22-12-18 © Javier Guillermo González
Roadside Hawk
Rupornis magnirostris
Roadside Hawk
22-12-18 © Héctor Horacio García
Roadside Hawk
15-12-18 © Javier Guillermo González
Greyish Baywing
Agelaioides badius
Greyish Baywing
22-12-18 ©
Double-collared Seedeater
Sporophila caerulescens
Double-collared Seedeater
22-12-18 © Javier Guillermo González
Glittering-bellied Emerald
Chlorostilbon lucidus
Glittering-bellied Emerald
22-12-18 © Héctor Horacio García
Tropical Kingbird
Tyrannus melancholicus
Tropical Kingbird
22-12-18 © Javier Guillermo González



Cattle Egret
Bubulcus ibis
Cattle Egret
15-12-18 © Javier Guillermo González
Small-billed Elaenia
Elaenia parvirostris
Small-billed Elaenia
15-12-18 © Javier Guillermo González
Southern Screamer
Chauna torquata
Southern Screamer
15-12-18 © Javier Guillermo González
Black-capped Warbling-Finch
Poospiza melanoleuca
Black-capped Warbling-Finch
15-12-18 © Javier Guillermo González
Spectacled Tyrant
Hymenops perspicillatus
Spectacled Tyrant
15-12-18 © Javier Guillermo González
Bran-colored Flycatcher
Myiophobus fasciatus
Bran-colored Flycatcher
15-12-18 © Javier Guillermo González
House Sparrow
Passer domesticus
House Sparrow
15-12-18 © Javier Guillermo González

Plush-crested Jay
Cyanocorax chrysops
Plush-crested Jay
23-12-18 © Román Montero
Plush-crested Jay
23-12-18 © Lucas de Ciria
Plush-crested Jay
23-12-18 © Lucas de Ciria
Ferruginous Pygmy-Owl
Glaucidium brasilianum
Ferruginous Pygmy-Owl
23-12-18 © Lucas de Ciria
Ferruginous Pygmy-Owl
23-12-18 © Román Montero
Dusky-legged Guan
Penelope obscura
Dusky-legged Guan
23-12-18 © Sally Dietrich
Sally saw these wo guans and later two others, but she does not know whether they were the same
Dusky-legged Guan
23-12-18 © Román Montero
Dusky-legged Guan
23-12-18 © Lucas de Ciria
Streaked Flycatcher
Myiodynastes maculatus
Streaked Flycatcher
23-12-18 © Lucas de Ciria
Streaked Flycatcher
23-12-18 © Román Montero
Double-collared Seedeater
Sporophila caerulescens
Double-collared Seedeater
23-12-18 © Lucas de Ciria
Golden-billed Saltator
Saltator aurantiirostris
Golden-billed Saltator
23-12-18 © Lucas de Ciria

Magnificent Frigatebird
Fregata magnificens
Magnificent Frigatebird
16-12-18 © Silvia Loiacono
Magnificent Frigatebird
16-12-18 © Silvia Loiacono
Magnificent Frigatebird
16-12-18 © Silvia Loiacono

Fork-tailed Flycatcher
Tyrannus savana
Fork-tailed Flycatcher
16-12-18 © Carlos González Ledo
Hooded Siskin
Spinus magellanicus
Hooded Siskin
16-12-18 © Carlos González Ledo
Double-collared Seedeater
Sporophila caerulescens
Double-collared Seedeater
16-12-18 © Carlos González Ledo
Common Gallinule
Gallinula galeata
Common Gallinule
16-12-18 © Carlos González Ledo

Small-billed Elaenia
Elaenia parvirostris
Small-billed Elaenia
15-12-18 © Héctor Horacio García
Spectacled Tyrant
Hymenops perspicillatus
Spectacled Tyrant
15-12-18 © Héctor Horacio García
Ringed Teal
Callonetta leucophrys
Ringed Teal
15-12-18 © Héctor Horacio García
Tropical Kingbird
Tyrannus melancholicus
Tropical Kingbird
15-12-18 © Héctor Horacio García
Roadside Hawk
Rupornis magnirostris
Roadside Hawk
15-12-18 © Héctor Horacio García
Southern Caracara
Caracara plancus
Southern Caracara
15-12-18 © Héctor Horacio García



Bird Survey organized by the COARECS - 15 of December, 2018
After a heavy rainfall on Tuesday the reserve opened at 9 a.m.. We were few at the very beginning but after a few hours the number increased. A total of 111 birds were watched.
Observadores censo 15 de diciembre 2018
15-12-18 © J. Simón Tagtachian

Snail Kite
Rostrhamus sociabilis
Snail Kite
15-12-18 © Sergio Cusano
Snail Kite
15-12-18 © Sergio Cusano
Yellow-chinned Spinetail
Certhiaxis cinnamomeus
Yellow-chinned Spinetail
15-12-18 © Sergio Cusano
White-faced Ibis
Plegadis chihi
White-faced Ibis
15-12-18 © Sergio Cusano
Sayaca Tanager
Thraupis sayaca
Sayaca Tanager
15-12-18 © Sergio Cusano
Red-crested Cardinal
Paroaria coronata
Red-crested Cardinal
15-12-18 © Sergio Cusano
Chestnut-capped Blackbird
Chrysomus ruficapillus
Chestnut-capped Blackbird
15-12-18 © Sergio Cusano
Black-backed Water-Tyrant
Fluvicola albiventer
Black-backed Water-Tyrant
15-12-18 © Sergio Cusano



Silver Teal
Anas versicolor
Silver Teal
09-12-18 © Carlos González Ledo
Cocoi Heron
Ardea cocoi
Cocoi Heron
09-12-18 © Carlos González Ledo
Fork-tailed Flycatcher
Tyrannus savana
Fork-tailed Flycatcher
08-12-18 © Javier Guillermo González
Blue-and-yellow Tanager
Pipraeidea bonariensis
Blue-and-yellow Tanager
08-12-18 © Javier Guillermo González
Green-barred Woodpecker
Colaptes melanochloros
Green-barred Woodpecker
08-12-18 © Javier Guillermo González
Brown-chested Martin
Progne tapera
Brown-chested Martin
08-12-18 © Javier Guillermo González
Double-collared Seedeater
Sporophila caerulescens
Double-collared Seedeater
08-12-18 © Javier Guillermo González

Chalk-browed mockingbird - Black-and-white tegu lizard
Chalk-browed Mockingbird
08-12-18 © Javier Guillermo González
Chalk-browed Mockingbird
08-12-18 © Javier Guillermo González

The mockingbird fears nobody, no matter its size. Here it is harrassing a black-and-white tegu lizard


Peregrine Falcon
Falco peregrinus
Peregrine Falcon
02-12-18 © Javier Guillermo González
Peregrine Falcon
02-12-18 © Javier Guillermo González
Ultramarine Grosbeak
Cyanoloxia brissonii
Ultramarine Grosbeak
02-12-18 © Javier Guillermo González
Wood Stork
Mycteria americana
Wood Stork
02-12-18 © Javier Guillermo González
Checkered Woodpecker
Veniliornis mixtus
Checkered Woodpecker
02-12-18 © Javier Guillermo González
Small-billed Elaenia
Elaenia parvirostris
Small-billed Elaenia
02-12-18 © Carlos González Ledo
Yellow-browed Tyrant
Satrapa icterophrys
Yellow-browed Tyrant
02-12-18 © Carlos González Ledo
Gilded Hummingbird
Hylocharis chrysura
Gilded Hummingbird
02-12-18 © Javier Guillermo González
White-tipped Dove
Leptotila verreauxi
White-tipped Dove
02-12-18 © Javier Guillermo González
Silver Teal
Anas versicolor
Silver Teal
02-12-18 © Javier Guillermo González
Glittering-bellied Emerald
Chlorostilbon lucidus
Glittering-bellied Emerald
02-12-18 © Javier Guillermo González

At blue anise sage Salvia guaranitica

White-rumped Swallow
Tachycineta leucorrhoa
White-rumped Swallow
02-12-18 © Javier Guillermo González
Golden-crowned Warbler
Basileuterus culicivorus
Golden-crowned Warbler
02-12-18 © Javier Guillermo González
Tropical Parula
Setophaga pitiayumi
Tropical Parula
02-12-18 © Javier Guillermo González

Two swarms
Two swarms
Characteristics of bee and ant swarms
Read more




censo diciembre 2018

Maroon-bellied Parakeet
Pyrrhura frontalis
Maroon-bellied Parakeet
09-12-18 © Silvia Sokolovsky



Dusky-legged Guan
Penelope obscura
Dusky-legged Guan
08-12-18 © Sergio Cusano
Dusky-legged Guan
08-12-18 © Sergio Cusano
Dusky-legged Guan
08-12-18 © Sergio Cusano
Out of the blue sometnhing big landed in the middle of the path. It was a dusky-legged guan!!!!!! First it lay on the ground wallowing in dust. A small girl got near and the guan flew to a nearby tree where it stood for a while and finally left
Southern Screamer
Chauna torquata
Southern Screamer
08-12-18 © Sergio Cusano
Southern Screamer
08-12-18 © Sergio Cusano
Golden-billed Saltator
Saltator aurantiirostris
Golden-billed Saltator
08-12-18 © Sergio Cusano
Blue-and-yellow Tanager
Pipraeidea bonariensis
Blue-and-yellow Tanager
08-12-18 © Sergio Cusano
Spot-winged Pigeon
Patagioenas maculosa
Spot-winged Pigeon
08-12-18 © Sergio Cusano
White-faced Ibis
Plegadis chihi
White-faced Ibis
08-12-18 © Sergio Cusano
White-faced Ibis
08-12-18 © Sergio Cusano
Not very remarkable, but the white line on the face typical of nuptial plumage can be seen
Red-eyed Vireo
Vireo olivaceus
Red-eyed Vireo
08-12-18 © Sergio Cusano
Green-barred Woodpecker
Colaptes melanochloros
Green-barred Woodpecker
08-12-18 © Sergio Cusano
Streaked Flycatcher
Myiodynastes maculatus
Streaked Flycatcher
08-12-18 © Sergio Cusano
Chestnut-capped Blackbird
Chrysomus ruficapillus
Chestnut-capped Blackbird
08-12-18 © Sergio Cusano
Chestnut-capped Blackbird
08-12-18 © Sergio Cusano

Black-backed Water-Tyrant
Fluvicola albiventer
Black-backed Water-Tyrant
06-12-18 © J. Simón Tagtachian
Black-backed Water-Tyrant
06-12-18 © J. Simón Tagtachian
Maguari Stork
Ciconia maguari
Maguari Stork
06-12-18 © J. Simón Tagtachian
Maguari Stork
06-12-18 © J. Simón Tagtachian
Maguari Stork
06-12-18 © J. Simón Tagtachian
Maguari Stork
06-12-18 © J. Simón Tagtachian
White-faced Ibis
Plegadis chihi
White-faced Ibis
06-12-18 © J. Simón Tagtachian
Harris's Hawk
Parabuteo unicinctus
Harris's Hawk
06-12-18 © J. Simón Tagtachian
Black-and-rufous Warbling-Finch
Poospiza nigrorufa
Black-and-rufous Warbling-Finch
06-12-18 © J. Simón Tagtachian
Limpkin
Aramus guarauna
Limpkin
06-12-18 © J. Simón Tagtachian
Southern Caracara
Caracara plancus
Southern Caracara
06-12-18 © J. Simón Tagtachian
Bare-faced Ibis
Phimosus infuscatus
Bare-faced Ibis
06-12-18 © J. Simón Tagtachian

Black Skimmer
Rynchops niger
Black Skimmer
04-12-18 © J. Simón Tagtachian
Within a numerous group of gulls Simón discovered the skimmer when he saw the photos
Black Skimmer
04-12-18 © J. Simón Tagtachian
Black Skimmer
04-12-18 © J. Simón Tagtachian
Black Skimmer
04-12-18 © J. Simón Tagtachian
Black Skimmer
04-12-18 © J. Simón Tagtachian
Gray-hooded Gull
Chroicocephalus cirrocephalus
Gray-hooded Gull
04-12-18 © J. Simón Tagtachian
In the same group of gulls, the Black Skimmer and a Grey-hooded Gull
Yellow-billed Pintail
Anas georgica
Yellow-billed Pintail
04-12-18 © J. Simón Tagtachian

With red-gartered coots

Red Shoveler
Anas platalea
Red Shoveler
04-12-18 © J. Simón Tagtachian
Black-headed Duck
Heteronetta atricapilla
Black-headed Duck
04-12-18 © J. Simón Tagtachian

The first on the right, 

White-tufted Grebe
Rollandia rolland
White-tufted Grebe
04-12-18 © J. Simón Tagtachian
White-eyed Parakeet
Psittacara leucophtalmus
White-eyed Parakeet
04-12-18 © J. Simón Tagtachian
Black-necked Stilt
Himantopus mexicanus
Black-necked Stilt
04-12-18 © J. Simón Tagtachian
Blue-and-white Swallow
Pygochelidon cyanoleuca
Blue-and-white Swallow
04-12-18 © J. Simón Tagtachian
Rufescent Tiger-Heron
Tigrisoma lineatum
Rufescent Tiger-Heron
06-12-18 © J. Simón Tagtachian
The chick of the Brasil end
Great Kiskadee
Pitangus sulphuratus
Great Kiskadee
04-12-18 © J. Simón Tagtachian
With a white mulberry in the bill

Parasitism: Hornero parasitized by shiny cowbird
Rufous Hornero
24-11-18 © Javier Guillermo González

Parasitized by shiny cowbird

A fight between a tropical kingbird and another bird called our eye. The latter turned to be a female shiny cowbird and we assumed the cowbird tried to parasitize the kingbird. The cowbird left and the kingbird perched in a tipu tree. We thought the nest could be near and stayed to see if we could spot it. We were not lucky. But to our surprise in a tipu tree next to it there was a hornero that had been parasitized by a shiny cowbird. The fledgling claimed for food. Nevertheless when the hornero arrived, it got into the nest to feed its own chicks. On this occasion the cowbird got nothing. But a few moments later another or the same adult brought him some food.
Rufous Hornero
24-11-18 © Javier Guillermo González

Parasitized by shiny cowbird

Rufous Hornero
24-11-18 © Javier Guillermo González

Parasitized by shiny cowbird



Ringed Teal
Callonetta leucophrys
Ringed Teal
27-11-18 © J. Simón Tagtachian
Yellow-billed Teal
Anas flavirostris
Yellow-billed Teal
27-11-18 © J. Simón Tagtachian
Southern Screamer
Chauna torquata
Southern Screamer
27-11-18 © J. Simón Tagtachian
Southern Screamer
27-11-18 © J. Simón Tagtachian
Black-headed Duck
Heteronetta atricapilla
Black-headed Duck
27-11-18 © J. Simón Tagtachian
Wood Stork
Mycteria americana
Wood Stork
24-11-18 © Javier Guillermo González
Maguari Stork
Ciconia maguari
Maguari Stork
24-11-18 © Javier Guillermo González
Black-backed Water-Tyrant
Fluvicola albiventer
Black-backed Water-Tyrant
24-11-18 ©
Black-backed Water-Tyrant
24-11-18 © Héctor Horacio García
Streaked Flycatcher
Myiodynastes maculatus
Streaked Flycatcher
24-11-18 © Javier Guillermo González
Double-collared Seedeater
Sporophila caerulescens
Double-collared Seedeater
24-11-18 ©
Chimango Caracara
Milvago chimango
Chimango Caracara
24-11-18 © Héctor Horacio García
Checkered Woodpecker
Veniliornis mixtus
Checkered Woodpecker
24-11-18 © Javier Guillermo González
Golden-billed Saltator
Saltator aurantiirostris
Golden-billed Saltator
24-11-18 © Javier Guillermo González