News - December 2015

2016



Greyish Baywing
Agelaioides badius
29-12-15 © Federico Andrés De Maio
House Wren
Troglodytes aedon
29-12-15 © Federico Andrés De Maio
Cocoi Heron
Ardea cocoi
29-12-15 ©

Turkey Vulture
Cathartes aura
Turkey Vulture
27-12-15 © Gonzalo Díaz
Turkey Vulture
27-12-15 © Gonzalo Díaz
Turkey Vulture
27-12-15 © Gonzalo Díaz
Turkey Vulture
27-12-15 © Gonzalo Díaz
Golden-crowned Warbler
Basileuterus culicivorus
Golden-crowned Warbler
26-12-15 © Dolores Fernández

A few butterflies
Laurentia Emperor
Doxocopa laurentia laurentia
Zafiro/Laurentia Emperor26 12 15 © Silvia González
Found dead on the ground. Dorsal view
Laurentia Emperor
Doxocopa laurentia laurentia
Zafiro/Laurentia Emperor26 12 15 © Silvia González
Same individual. Ventral view
Adelpha syma
Adelpha syma
Almirante menor/Adelpha syma12 12 15 © Cora Rimoldi
Common White-milk
Tatochila autodice
lechera común GFB 12 1512 15 © Gustavo F. Brahamian
Mexican Silverspot
Dione moneta
Moneta/Mexican Silverspot5 12 15 © Sergio Cusano
Lyssipoides Metalmark
Riodina lyssipoides
Danzarina chica/Lyssipoides Metalmark26 12 15 © Silvia González
Gulf Fritillary
Agraulis vanillae maculosa
Espejitos/Gulf Fritillary15 12 15 © Sergio Cusano
Gulf Fritillary
Agraulis vanillae maculosa
Espejitos/Gulf Fritillary15 12 15 © Sergio Cusano

Photos by Luis Pagano
White Woodpecker
Melanerpes candidus
White Woodpecker
19-09-15 © Luis G. Pagano

Three indivduals.Very far but the top photo shows all the body white and black wings

Southern Martin
Progne elegans
Southern Martin
04-01-14 © Luis G. Pagano
Southern Martin
16-10-15 © Luis G. Pagano
Large Elaenia
Elaenia spectabilis
Large Elaenia
07-11-15 © Lui Pagano
Large Elaenia
04-01-14 © Luis G. Pagano

Tropical Kingbird
Tyrannus melancholicus
Tropical Kingbird
19-12-15 © J. Simón Tagtachian

Offering a token?

Gilded Hummingbird
Hylocharis chrysura
Gilded Hummingbird
29-12-15 © J. Simón Tagtachian

Lapping up flower of white cedar Melia azederach

Gilded Hummingbird
29-12-15 © J. Simón Tagtachian

Lapping up flower of white cedar Melia azederach

Gilded Hummingbird
29-12-15 © J. Simón Tagtachian

Lapping up flower of white cedar Melia azederach

Camuati wasp
Polybia sp.
Camuati wasp
03-12-15 © Gustavo F. Brahamian
Ladybug
Eriopis connexa
Ladybug
21-11-15 © Gustavo F. Brahamian
Flea beetle
Alagoasa vigintisetemmaculata
Flea beetle
05-12-15 © Judith Erica Sandberg
Yellow-lined Grasshopper
Schistocerca flavofasciata
Yellow-lined Grasshopper
03-12-15 © Gustavo F. Brahamian



Snail Kite
Rostrhamus sociabilis
Snail Kite
29-12-15 © J. Simón Tagtachian
Snail Kite
29-12-15 © J. Simón Tagtachian
Warbling Doradito
Pseudocolopteryx flaviventris
Warbling Doradito
29-12-15 © J. Simón Tagtachian
White-eyed Parakeet
Psittacara leucophtalmus
White-eyed Parakeet
29-12-15 © J. Simón Tagtachian
White-eyed Parakeet
29-12-15 © J. Simón Tagtachian
Red-gartered Coot
Fulica armillata
Red-gartered Coot
29-12-15 © J. Simón Tagtachian
Red-gartered Coot
29-12-15 © J. Simón Tagtachian
Kelp Gull
Larus dominicanus
Kelp Gull
29-12-15 © J. Simón Tagtachian
Turkey Vulture
Cathartes aura
Turkey Vulture
28-12-15 © J. Simón Tagtachian
Turkey Vulture
28-12-15 © J. Simón Tagtachian
Turkey Vulture
28-12-15 © J. Simón Tagtachian
Turkey Vulture
28-12-15 © J. Simón Tagtachian
Turkey Vulture
28-12-15 © J. Simón Tagtachian
White-tufted Grebe
Rollandia rolland
White-tufted Grebe
28-12-15 © J. Simón Tagtachian

A small flock of 10 fishing together


Other fauna
Lesser swimming frog
Pseudis minutus
Ranita acuática común/Lesser swimming frog© Gustavo F. Brahamian
Lesser swimming frog
Pseudis minutus
Ranita acuática común/Lesser swimming frog© Gustavo F. Brahamian
Coypu
Myocastor coypus
Coipo/Coypu© J. Simón Tagtachian
Coypu
Myocastor coypus
Coipo/Coypu© J. Simón Tagtachian
Black-and-white Tegu Lizard
Tupinambis merianae
Lagarto overo/Black-and-white Tegu LizardEating turtle's eggs
© Eduardo Carreyra
Brazilian Guinea Pig
Cavia aperea
Cuis/Brazilian Guinea Pig© Sergio Cusano
Painted turtle
Trachemys scripta dorbignyi
Tortuga pintada/Painted turtle© Sergio Cusano
Side-necked Turtle
Phrynops hilarii
Tortuga de laguna/Side-necked Turtle© J. Simón Tagtachian
Common Toad
Rhinella arenarum
Sapo común/Common Toad© Sergio Cusano
Cat
Felis silvestri catus
Gato/Cat© Gustavo F. Brahamian

Blue-black Grassquit
Volatinia jacarina
Blue-black Grassquit
26-12-15 © J. Simón Tagtachian

Thanks to Pablo's ear the grassquit was detected

Blue-black Grassquit
26-12-15 © J. Simón Tagtachian

Thanks to Pablo's ear the grassquit was detected

Fork-tailed Flycatcher
Tyrannus savana
Fork-tailed Flycatcher
29-12-15 © J. Simón Tagtachian

Very few fork-tailed flycatchers seen at the RECS. We can count them on one hand

Neotropic Cormorant
Phalacrocorax brasilianus
Neotropic Cormorant
26-12-15 © J. Simón Tagtachian

A busy island. From left to right: Neotropic cormorant Phalacrocorax brasilianus, 5 yellow-billed teals Anas flavirostris, wattled jacana Jacana jacana, another neotropic cormorant Phalacrocorax brasilianus, white-faced whistling-duck Dendrocygna viduata, red-gartered coot Fulica armillata and lake duck Oxyura vittata.

Brazilian Teal
Amazonetta brasiliensis
Brazilian Teal
26-12-15 © J. Simón Tagtachian
Streaked Flycatcher
Myiodynastes maculatus
Streaked Flycatcher
26-12-15 © J. Simón Tagtachian
Pied-billed Grebe
Podilymbus podiceps
Pied-billed Grebe
26-12-15 © J. Simón Tagtachian
Pied-billed Grebe
26-12-15 © J. Simón Tagtachian
Coscoroba Swan
Coscoroba coscoroba
Coscoroba Swan
26-12-15 © J. Simón Tagtachian
Rosy-billed Pochard
Netta peposaca
Rosy-billed Pochard
26-12-15 © J. Simón Tagtachian
White-rumped Swallow
Tachycineta leucorrhoa
White-rumped Swallow
26-12-15 © J. Simón Tagtachian

Two birthworts
Aristoloquia/Calico flower
Aristolochia elegans 26 12 15 © Silvia González

Aristoloquia/Calico flower
Aristolochia elegans
26 12 15 © Silvia González
There are three species of birthworts at the reserve. Here there two of them adn there is a third missing.
Aristolochia elegans (top photo) is a climbing plant. We found it on the road running along the river coast from Viamonte to the Meeting Point. It was full of flowers and two Polydamas Swallowtails were flitting about and it was impossible to photograph them. The caterpillar feeds on this plant.

Mil hombres/Fringed Dutchman's pipe
Aristolochia fimbriata 26 12 15 © Silvia González

Mil hombres/Fringed Dutchman's pipeAristolochia fimbriata
26 12 15 © Silvia González
This birthwort
Aristolochia fimbriata is native. It is spreading on the ground. Here we did not see the butterfly but the moths feeding on the plant. The third species is
Aristolochia macroura, but next time.
Plants, flowers and fruits
Vernonia scorpioides
Vernonia scorpioides
Hierba de San Simón/Vernonia scorpioides© Sergio Cusano
Peruvian verbena
Glandularia peruviana
Margarita punzó/Peruvian verbena© Sergio Cusano
Banana plant
Musa paradisiaca
Banano/Banana plant© Sergio Cusano
Banana plant
Musa paradisiaca
Banano/Banana plant© Sergio Cusano
American wild carrot
Daucus pusillus
Zanahoria blanca/American wild carrot© Cora Rimoldi
Hippeastrum
Hippeastrum sp
Hippeastrum© Sergio Cusano
Passion flower
Passiflora caerulea
Mburucuyá/Passion flower© Sergio Cusano
Passion flower
Passiflora caerulea
Mburucuyá/Passion flower© Sergio Cusano
Indian Shot
Canna indica
Achira roja/Indian Shot© Sergio Cusano
Peach
Prunus persica
Durazno/Peach© Sergio Cusano
South American tipu tree
Tipuana tipu
Tipa/South American tipu tree© Sergio Cusano
Pacara earpod tree
Enterolobium contortisiliquum
Timbó/Pacara earpod tree© Sergio Cusano
Spanish dagger
Yucca gloriosa
Yuca/Spanish dagger© Sergio Cusano
Pencil plant
Euphorbia tirucalli
Árbol dedo/Pencil plant© Sergio Cusano
Lantana
Lantana camara
Lantana© Sergio Cusano
Cactus
Opuntia sp.
Opuntia© Sergio Cusano
Common moth vine
Araujia hortorum
Tasi/Common moth vine© Sergio Cusano
Pope of the river
Stigmatophyllum littorale
Papa del río/Pope of the river© Sergio Cusano
Jacaranda
Jacaranda mimosifolia
Jacarandá/Jacaranda© Sergio Cusano
Spanish broom
Spartium junceum
Retama/Spanish broom© Sergio Cusano
The Reserve will be closed on December 24th, 25th and 31st and January 1st, 2016
Los datos finales del censo del 19 de diciembre de 2015 organizado por el COARECS




Ferruginous Pygmy-Owl
Glaucidium brasilianum
Ferruginous Pygmy-Owl
19-12-15 © Eduardo Soriano Grandes
White-eyed Parakeet
Psittacara leucophtalmus
White-eyed Parakeet
19-12-15 © Eduardo Soriano Grandes
Yellow-browed Tyrant
Satrapa icterophrys
Yellow-browed Tyrant
19-12-15 © Silvia Ana González
Red-gartered Coot
Fulica armillata
Red-gartered Coot
19-12-15 © Gustavo F. Brahamian
Roadside Hawk
Rupornis magnirostris
Roadside Hawk
19-12-15 © Gustavo F. Brahamian
Black-backed Water-Tyrant
Fluvicola albiventer
Black-backed Water-Tyrant
19-12-15 © Judith Erica Sandberg
Checkered Woodpecker
Veniliornis mixtus
Checkered Woodpecker
19-12-15 © Silvia Ana González

Juveniles
Golden-crowned Warbler
Basileuterus culicivorus
Golden-crowned Warbler
19-12-15 © Sergio Cusano
Golden-crowned Warbler
19-12-15 © Sergio Cusano
Blue-and-white Swallow
Pygochelidon cyanoleuca
Blue-and-white Swallow
19-12-15 © Sergio Cusano
Blue-and-white Swallow
19-12-15 © Sergio Cusano
White-eyed Parakeet
Psittacara leucophtalmus
White-eyed Parakeet
19-12-15 © Eduardo Soriano Grandes
Sooty-fronted Spinetail
Synallaxis frontalis
Sooty-fronted Spinetail
19-12-15 © Sergio Cusano
Gray-necked Wood-Rail
Aramides cajaneus
Gray-necked Wood-Rail
19-12-15 © Judith Erica Sandberg
Common Gallinule
Gallinula galeata
Common Gallinule
19-12-15 © Sergio Cusano
Red-crested Cardinal
Paroaria coronata
Red-crested Cardinal
19-12-15 © Sergio Cusano

Solitary Black Cacique
Cacicus solitarius
Solitary Black Cacique
19-12-15 © Sergio Cusano
Rufous Hornero
19-12-15 © Sergio Cusano
Common Gallinule
Gallinula galeata
Common Gallinule
19-12-15 © Sergio Cusano
Spot-winged Pigeon
Patagioenas maculosa
Spot-winged Pigeon
19-12-15 © Sergio Cusano
Spot-winged Pigeon
19-12-15 © Sergio Cusano

Spot-winged pigeons are frequently found with picazuro pigeons (right)

Red-eyed Vireo
Vireo olivaceus
Red-eyed Vireo
19-12-15 © Sergio Cusano
Bare-faced Ibis
Phimosus infuscatus
Bare-faced Ibis
19-12-15 © Sergio Cusano

White-faced ibis Plegadis chihi (legs extend beyond the tail) and bare-faced ibis Phimosus infuscatus together.

.
Rosy-billed Pochard
Netta peposaca
Rosy-billed Pochard
19-12-15 © Sergio Cusano

The most abundant duck of the reserve. I counted 20 in only one of the groups in the pond

Great Grebe
Podiceps major
Great Grebe
19-12-15 © Sergio Cusano

Mallard Duck
Anas platyrhynchos
Ánade real/Mallard Duck19 12 15 © Sergio Cusano
Ánade real/Mallard Duck19 12 15 © Gustavo F. Brahamian

Juveniles
Pied-billed Grebe
Podilymbus podiceps
Pied-billed Grebe
15-12-15 © Sergio Cusano
Blue-and-yellow Tanager
Pipraeidea bonariensis
Blue-and-yellow Tanager
15-12-15 © Sergio Cusano
Rosy-billed Pochard
Netta peposaca
Rosy-billed Pochard
15-12-15 © Sergio Cusano
Rosy-billed Pochard
15-12-15 © Sergio Cusano
Red-gartered Coot
Fulica armillata
Red-gartered Coot
15-12-15 © Sergio Cusano
Red-gartered Coot
15-12-15 © Sergio Cusano
Rufous-collared Sparrow
Zonotrichia capensis
Rufous-collared Sparrow
15-12-15 © Sergio Cusano
Rufous-collared Sparrow
15-12-15 © Sergio Cusano

Black-backed Water-Tyrant
Fluvicola albiventer
Black-backed Water-Tyrant
15-12-15 © Sergio Cusano
Sayaca Tanager
Thraupis sayaca
Sayaca Tanager
15-12-15 © Sergio Cusano
White-lined Tanager
Tachyphonus rufus
White-lined Tanager
05-12-15 © Gustavo Masuzzo
White-lined Tanager
05-12-15 © Gustavo Masuzzo
Hooded Siskin
Spinus magellanicus
Hooded Siskin
12-12-15 © Gustavo Masuzzo

Fight among red-gartered coots and common gallinules
Fight among red-gartered coots and common gallinules
Fight among red-gartered coots and common gallinules
Read more

Blue-black Grassquit
Volatinia jacarina
Blue-black Grassquit
12-12-15 © Gustavo Masuzzo

On Saturday Gustavo found this juvenile, a not frequent visitor at the reserve. He looked for it for about 2 hours.

Blue-black Grassquit
12-12-15 © Eduardo Soriano Grandes
Snail Kite
Rostrhamus sociabilis
Snail Kite
12-12-15 © Eduardo Soriano Grandes
Yellow-billed Teal
Anas flavirostris
Yellow-billed Teal
12-12-15 © Eduardo Soriano Grandes
Gilded Hummingbird
Hylocharis chrysura
Gilded Hummingbird
12-12-15 © Eduardo Soriano Grandes
Striated Heron
Butorides striata
Striated Heron
12-12-15 © Eduardo Soriano Grandes
Black-backed Water-Tyrant
Fluvicola albiventer
Black-backed Water-Tyrant
12-12-15 © Eduardo Soriano Grandes
Black-backed Water-Tyrant
12-12-15 © Eduardo Soriano Grandes
Black-backed Water-Tyrant
12-12-15 © Eduardo Soriano Grandes
The nest is still under construction

Glittering-bellied Emerald
Chlorostilbon lucidus
Glittering-bellied Emerald
12-12-15 © Eduardo Nicolás Cusano
Glittering-bellied Emerald
12-12-15 © Eduardo Nicolás Cusano
Glittering-bellied Emerald
12-12-15 © Eduardo Nicolás Cusano
Glittering-bellied Emerald
12-12-15 © Eduardo Nicolás Cusano
Euler's Flycatcher
Lathrotriccus euleri
Euler's Flycatcher
12-12-15 © Eduardo Nicolás Cusano

Parasitism: Chalk-browed mockingbird - Shiny cowbird
Chalk-browed Mockingbird
Mimus saturninus
Chalk-browed Mockingbird
12-12-15 © Eduardo Nicolás Cusano

Shiny cowbird parasitizing chalk-browed mockingbird

Chalk-browed Mockingbird
12-12-15 © Eduardo Nicolás Cusano

Shiny cowbird parasitizing chalk-browed mockingbird


Screaming Cowbird
Molothrus rufoaxillaris
Screaming Cowbird
12-12-15 © Eduardo Nicolás Cusano
Screaming Cowbird
12-12-15 © Eduardo Nicolás Cusano
Checkered Woodpecker
Veniliornis mixtus
Checkered Woodpecker
12-12-15 © Eduardo Nicolás Cusano
Black-backed Water-Tyrant
Fluvicola albiventer
Black-backed Water-Tyrant
07-12-15 © Silvia Loiacono
Black-backed Water-Tyrant
07-12-15 © Silvia Loiacono
Black-backed Water-Tyrant
07-12-15 © J. Simón Tagtachian
White-winged Becard
Pachyramphus polychopterus
White-winged Becard
07-12-15 © J. Simón Tagtachian
Creamy-bellied Thrush
Turdus amaurochalinus
Creamy-bellied Thrush
07-12-15 © J. Simón Tagtachian

Mallard Duck
Anas platyrhynchos
Ánade real-Pato Pekin/Mallard Duck-Pekin duck7 12 15 © J. Simón Tagtachian

Ánade real/Mallard Duck5 12 15 © Gustavo F. Brahamian

Ánade real/Mallard Duck5 12 15 © Gustavo F. Brahamian

Ánade real/Mallard Duck7 12 15 © J. Simón Tagtachian
In these photos we can see all the Mallard Ducks now at the reserve. Let's remember that all these individuals descend from the wild Mallard Duck. The difference in plumage depends on the degree of domestication they have undergone. In the case of the Pekin Duck, white with orange bill, is the variant selectively bred as food. The other individuals have an ancestral plumage. The pair of the last photo appeared a month and half ago

Striped Cuckoo
Tapera naevia
Striped Cuckoo
05-12-15 © Sergio Cusano
Striped Cuckoo
05-12-15 © Diego Carús
Striped Cuckoo
05-12-15 © Judith Erica Sandberg
05-12-15 © Cora Rimoldi

Scissor-tailed Nightjar
Hydropsalis torquata
Scissor-tailed Nightjar
05-12-15 © Sergio Cusano
Scissor-tailed Nightjar
05-12-15 © Judith Erica Sandberg
Scissor-tailed Nightjar
05-12-15 © J. Simón Tagtachian
Scissor-tailed Nightjar
05-12-15 © J. Simón Tagtachian
Right after the Striped Cuckoo Guillermo from the Coa Yguazú saw this female camouflaged in the vegetation. We got near and everybody photographed the bird. Another one flew over our heads
Glittering-bellied Emerald
Chlorostilbon lucidus
Glittering-bellied Emerald
05-12-15 © Sergio Cusano
Glittering-bellied Emerald
05-12-15 © J. Simón Tagtachian
And next to the nightjar a female Glittering-bellied Emerald was sitting on the eggs

Glaucous-blue Grosbeak
Cyanoloxia glaucocaerulea
Glaucous-blue Grosbeak
05-12-15 © Sergio Cusano
Glaucous-blue Grosbeak
05-12-15 © Diego Carús
Black-backed Water-Tyrant
Fluvicola albiventer
Black-backed Water-Tyrant
05-12-15 © Diego Carús
Black-backed Water-Tyrant
05-12-15 © Judith Erica Sandberg
White-browed Blackbird
Sturnella superciliaris
White-browed Blackbird
05-12-15 © Sergio Cusano
White-browed Blackbird
05-12-15 © J. Simón Tagtachian
Masked Gnatcatcher
Polioptila dumicola
Masked Gnatcatcher
02-12-15 © Judith Erica Sandberg
Masked Gnatcatcher
02-12-15 © Judith Erica Sandberg
The three chicks have alreday left the nest
Pied-billed Grebe
Podilymbus podiceps
Pied-billed Grebe
05-12-15 © J. Simón Tagtachian
Coscoroba Swan
Coscoroba coscoroba
Coscoroba Swan
05-12-15 © Judith Erica Sandberg
Coscoroba Swan
05-12-15 © Gustavo F. Brahamian

Common Gallinule
Gallinula galeata
Common Gallinule
05-12-15 © Sergio Cusano
Common Gallinule
05-12-15 © J. Simón Tagtachian
Black-crowned Night-Heron
Nycticorax nycticorax
Black-crowned Night-Heron
05-12-15 © Sergio Cusano
Cocoi Heron
Ardea cocoi
Cocoi Heron
05-12-15 © J. Simón Tagtachian
White-eyed Parakeet
Psittacara leucophtalmus
White-eyed Parakeet
05-12-15 © Sergio Cusano

Eating flower of cock spur tree Erythrina crista-galli

Yellow-chevroned Parakeet
Brotogeris chiriri
Yellow-chevroned Parakeet
05-12-15 © Sergio Cusano
Gray-hooded Gull
Chroicocephalus cirrocephalus
Gray-hooded Gull
05-12-15 © J. Simón Tagtachian
Brown-hooded Gull
Chroicocephalus maculipennis
Brown-hooded Gull
05-12-15 © J. Simón Tagtachian
Great Grebe
Podiceps major
Great Grebe
05-12-15 © Sergio Cusano
Plumbeous Rail
Pardirallus sanguinolentus
Plumbeous Rail
05-12-15 © Sergio Cusano
Limpkin
Aramus guarauna
Limpkin
05-12-15 © Gustavo F. Brahamian
Variable Oriole
Icterus pyrrhopterus
Variable Oriole
05-12-15 © Gustavo F. Brahamian
Yellow-billed Cardinal
Paroaria capitata
Yellow-billed Cardinal
05-12-15 © Sergio Cusano