News - February 2014

Results of the 5th Bird Survey organized by the COARecs Report of 5th Bird Survey at RECS There were no problems whatsoever during the day. The provisional general count at midday was 98 species and as we left the Southern Screamer appeared and species 99 was added. The result was similar compared to February 2013 (102-99), but there was a general feeling of lack of birds and numbers showed this. Very common birds which are expected to be seen in all routes did not pop up everywhere. As expected, water in Coipos (routes 1a and 1b) added lots of waterbirds compared to the Canal Carlota Roberts (former Canal Sudeste) (route 5) which was the major "source" if waterbirds when ponds were dry. More than 10 species were added. But here the absence of the Spot-flanked Gallinule surprised us. Lots of individuals had been seen lately. This feeling of bird scarcity might be justified in the case of summer visitors which come to the south to breed due to the postponement of the census. Originally programmed on February 1st it had to be put off due to rain and it was carried out three weeks later. By this time many of these visitors had already left for their winter grounds. What can we say about resident birds? Of course they are not anchored at anywhere.

Katydid
Dasyscelus normalis
Katydid
21-02-14 © Sergio Cusano
Katydid
21-02-14 © J. Simón Tagtachian
Katydid
21-02-14 © J. Simón Tagtachian

Black-and-rufous Warbling-Finch
Poospiza nigrorufa
Sietevestidos/Black-and-rufous Warbling-FinchJuvenile © J. Simón Tagtachian
Guira Cuckoo
Guira guira
Pirincho/Guira CuckooJuvenile © Carlos González Ledo
Campo Flicker
Colaptes campestris
Carpintero  campestre/Campo Flicker© J. Simón Tagtachian

Wattled Jacana
Jacana jacana
28-02-14 © Claudia y Tito Di Mauro

A wattled jacana defending its nest. It feels threatened by neighbour. Here the common gallinule. 

Photos in video format.

Swainson's Flycatcher
Myiarchus swainsoni
Burlisto pico canela/Swainson's Flycatcher© J. Simón Tagtachian
Barn Swallow
Hirundo rustica
Golondrina tijerita/Barn Swallow© J. Simón Tagtachian
Many-coloured Rush Tyrant
Tachuris rubigastra
Tachurí sietecolores J/Many-coloured Rush TyrantJJuvenile © Carlos González Ledo
White-faced Whistling-Duck
Dendrocygna viduata
Sirirí pampa/White-faced Whistling-DuckLas cuatro crías siguen creciendo © Carlos González Ledo
Wattled Jacana
Jacana jacana
Jacana/Wattled Jacana Jacana/Wattled Jacana Jacana/Wattled JacanaThe nest still has the four eggs and is being guarded and cared by the father © Amelia Besana
Butterflies Mariposas/ButterfliesTop
Rachiplusia nu © Gustavo F. Brahamian (left), Tropical White
Glutophrissa drusilla © Ignacio Chantada (right) Below Southern Busckeye
Junonia genoveva hilaris © J. Simón Tagtachian (left), Lysippoides Metalmark
Riodina lysippoides © Nicolás Giorgio (centre), Common Yellow
Eurema deva © Gustavo F. Brahamian (right)
5th Bird Survey organized by COARecs On Saturday 22nd the survey finally took place. It had been programmed for the 1st of February and was put off due to rain. The circuits were the same, except for route #1 which was divided into two sections, consequently another group was added. I thank photographers who shared their material to make the list more enjoyable. The list will be published as soon as it is ready. The survey lasts the whole day though the major deployment of observers is during the morning.
Green Kingfisher
Choroceryle americana
Martín pescador chico H/Green Kingfisher FFemale © Sergio Alejandro Cusano Martín pescador chico H/Green Kingfisher FFemale © Amelia Besana
Southern Screamer
Chauna torquata
Chajá/Southern Screamer© Sergio Alejandro Cusano It was midday and the bird count was over. We were leaving when Sergio ran into us. He was excited to show us a photo of a Southern Screamer which had just landed on the pond. Simón informed about and some others had also seen it and photographed. Chajá/Southern Screamer© Gustavo F Brahamian
Dark-billed Cuckoo
Coccyzus melancoryphus
Cuclillo canela/Dark-billed Cuckoo© J. Simón Tagtachian
White-winged Becard
Pachyramphus polychopterus
Anambé común/White-winged Becard© Elsa y Guillermo
Blue-and-white Swallow
Pygochelidon cyanoleuca
Golondrina barranquera/Blue-and-white Swallow© J. Simón Tagtachian
Streaked Flycatcher
Myiodynastes maculatus
Benteveo rayado/Streaked Flycatcher© J. Simón Tagtachian
Yellow-billed Cardinal
Paroaria capitata
Cardenilla/Yellow-billed Cardinal© Elsa y Guillermo
Brazilian Duck
Amazonetta brasiliensis
Pato cutirí/Brazilian Duck© Amelia Besana
Ultramarine Grosbeak
Cyanocompsa brissonii
Reinamora grande N/Ultramarine Grosbeak MMale © Eduardo Carreyra
White-faced Whistling-Duck
Dendrocygna viduata
Sirirí pampa/White-faced Whistling-Duck© Amelia Besana
Rufous-sided Crake
Laterallus melanophaius
Burrito común/Rufous-sided Crake© Claudia y Tito Di Mauro
Giant Wood-Rail
Aramides ypecaha
Ipacaá/Giant Wood-Rail© Amelia Besana
Gilded Sapphire
Hylocharis chrysura
Picaflor bronceado/Gilded Sapphire© J. Simón Tagtachian
Tropical Kingbird
Tyrannus melancholicus
Suirirí real/Tropical Kingbird© Cynthia Guevara
White-faced Ibis
Phimosus infuscatus
Cuervillo de cañada/White-faced Ibis© Cynthia Guevara
Monk Parakeet
Myiopsitta monachus
Cotorra/Monk Parakeet© Nicolás Giorgio
Coscoroba Swan
Coscoroba coscoroba
Coscoroba/Coscoroba Swan© Gustavo F Brahamian
Bay-winged Cowbird
Agelaioides badius
Tordo músico/Bay-winged Cowbird© Dolores Fernández
American Kestrel
Falco sparverius
Halconcito colorado/American Kestrel© Elsa y Guillermo
Glittering-bellied Emerald
Cholorostilbon lucidus
Picaflor común/Glittering-bellied Emerald© Eduardo Carreyra
Guira Cuckoo
Guira guira
Pirincho/Guira Cuckoo© Claudia y Tito Di Mauro
Creamy-bellied Thrush
Turdus amaurochalinus
Zorzal chalchalero/Creamy-bellied Thrush© Eduardo Carreyra
Small-billed Elaenia
Elaenia parvirostris
Fiofío pico corto/Small-billed Elaenia© Dolores Fernández
Red-fronted Coot - White-tufted Grebe
Fulica rufifrons - Rollandia rolland
Gallareta y macá/Coot and grebe© Claudia y Tito Di Mauro
Brown-chested Martin
Progne tapera
Golondrina parda/Brown-chested Martin© Nicolás Giorgio
Wattled Jacana - Common Gallinule
Jacana jacana - Gallinula galeata
Jacana y pollona/Jacana and gallinule© Claudia y Tito Di Mauro
Egrets Garzas/EgretsGreat Egrets with Cattle Egrets © Cynthia Guevara
Checkered Woodpecker
Veniliornis mixtus
Carpintero bataraz chico/Checkered Woodpecker© Nicolás Giorgio
Green-barred Woodpecker
Colaptes melanochloros
Carpintero real/Green-barred Woodpecker© Cynthia Guevara
Neotropic Cormorant
Phalacrocorax brasilianus
Biguá/Neotropic Cormorant© Claudia y Tito Di Mauro
White-faced Whistling-Duck
Dendrocygna viduata
Sirirí pampa/White-faced Whistling-Duck Sirirí pampa/White-faced Whistling-DuckAnd the White-faced Whistling-Ducks also said yes to the reserve © Nicolás Giorgio

Wattled Jacana
Jacana jacana
17-02-14 © Amelia Besana
When I saw the jacana fighting, I first thought it was taking care of the chicks., but when I zoomed the image I realized they were eggs. First some Rose-billed Pochard juveniles came near and then a coot. The jacana got very nervous because the coot was getting too close. When all visitors moved away, the jacana calmed down, checked the eggs and settled to heat them. Photos in video format
Wattled Jacana
01-02-14 © Amelia Besana
The four eggs are exposed and seem to be lying directly on the vegetal material with no added support underneath. This jacana, which so bravely defended the clutch and then sat on the eggs, is the father. In this species the female has a number of males, each in charge of a territory with enough resources to raise the chicks. The female mates with each of the males and takes care of the surveillance of the whole territory besides eating to recover the energy needed for a new egg-laying. The relationship between one female and a number of males is called polyandry. Besides in this case there is role reversal since it is the male which incubates and raise the chicks

Pied-billed Grebe
Podilymbus podiceps
17-02-14 © J. Simón Tagtachian
Photos in video format
Cocoi Heron
Ardea cocoi
Garza mora/Cocoi Heron© J. Simón Tagtachian
Many-coloured Rush-Tyrant
Tachuris rubigastra
Tachurí sietecolores J/Many-coloured Rush-Tyrant© J. Simón Tagtachian
White-tufted Grebe
Rollandia rolland
Macá común/White-tufted Grebe© Amelia Besana
White-tufted Grebe
Rollandia rolland
Macá común J/White-tufted Grebe JJuvenile © Amelia Besana
White-faced Whistling-Duck
Dendrocygna viduata
Sirirí pampa/White-faced Whistling-Duck© J. Simón Tagtachian
Yellow-billed Cardinal
Paroaria capitata
Cardenilla/Yellow-billed Cardinal© Mariano Ordóñez
Masked Yellowthroat
Geothlypis aequinoctialis
Arañero cara negra H/Masked Yellowthroat FFemale © J. Simón Tagtachian
Guira Cuckoo
Guira guira
Pirincho/Guira Cuckoo© J. Simón Tagtachian
Guira Cuckoo
Guira guira
Pirincho/Guira Cuckoo© J. Simón Tagtachian
Some insects
Snout
Libytheana carinenta
Picuda/SnoutNot seen around Costanera for a long time © Carlos González Ledo
Snout
Libytheana carinenta
Picuda/Snout© Gustavo F Brahamian
Fiery Skipper
Hylephila phyleus
Saltarina amarilla/Fiery Skipper© Carlos González Ledo
Southern Buckeye
Junonia genoveva hilaris
Cuatro ojos común/Southern Buckeye© Carlos González Ledo

Paper wasp
Polistes sp.
Paper wasp
31-08-13 © Gustavo F. Brahamian
Dragonfly
Micrathyria sp.
Dragonfly
09-02-14 © Carlos González Ledo
Black-headed Swan
Cygnus melancoryphus
Cisne cuello negro/Black-headed SwanAnd now they are at Coypu too © J. Simón Tagtachian
New bird species: Nacunda Nighthawk
Chordeiles nacunda
Ñacundá/Nacunda Nighthawk© J. Simón Tagtachian
Coscoroba Swan
Coscoroba coscoroba
Coscoroba/Coscoroba SwanCoscoroba/Coscoroba Swan© Nicolás Giorgio The Coscoroba Swan belongs in the family anatidae. A striking characteristic of this family are their webbed feet. Of the four feet three of them face forward and are joined by an interdigital membrane. The fourth toe, called hallux, is free and turns backward. In the photo we can see how the membrane folds when the foot is in a stand by position and how it expands when it stands. This membrane is useful to swim. Since it has a bigger surface the swan moves faster. When it makes a backward stroke toes are open and the web is expanded. When it moves forward toes are closed and the web folds to offer no resistance to water.
Ultramarine Grosbeak
Cyanocompsa brissonii
Reinamora grande H/Ultramarine Grosbeak FFemale © Pablo Serur
Scarlet-headed Blackbird
Amblyramphus holosericeus
Federal/Scarlet-headed Blackbird© Pablo Serur
Blue-and-yellow Tanager
Pipraeidea bonariensis
Naranjero M/Blue-and-yellow Tanager MMale © Pablo Serur
Wren-like Rushbird
Phleocryptes melanops
Junquero/Wren-like Rushbird© Carlos González Ledo
Bran-coloured Flycatcher
Myiophobus fasciatus
Mosqueta estriada/Bran-coloured Flycatcher© J. Simón Tagtachian
Black-and-white-Tegu Lizard
Salvator merianae
Lagarto overo/Black-and-white Tegu Lizard Lagarto overo/Black-and-white Tegu Lizard Lagarto overo/Black-and-white Tegu Lizard© J. Simón Tagtachian Lizards and snakes have evolved a very particular form of smelling scents. They use their tongue. As the tongue is taken out of the mouth it gets loaded with odour particles. To process them it is neccessary for them to take them to the Jacobson's organ which is on the top of the roof of the mouth. So in goes the tongue. Once the receptors of this organ get in touch with molecules they send the information to the brain. This refined way of smelling the environment serves other purposes as well, identify prey, choose mates, recognize kin, etc. That's way the regular movement of the tongue in and out of the mouth. Here the lizard was in the small garden at the Viamonte hut where there were lots of Pindo palm fruits
Syagrus romanzoffiana scattered on the grass. Licking the air it chooses which to eat.
White-banded Mockingbird
Mimus triurus
Calandria real/White-banded MockingbirdThis mockingbird breeds in the center and north west area of Argentina and migrates to the east during the nonbreeding season. That's why it visits us in winter. This individual is out of season and it is believed that these isolated cases are individuals that stay around © Ignacio Chantada
Many-coloured Rush-Tyrant
Tachuris rubigastra
Tachurí sietecolores/Many-coloured Rush-Tyrant© Claudia y Tito Di Mauro
Red-fronted Coot
Fulica rufifrons
Gallareta escudete rojo/Red-fronted Coot gallareta escudete rojo (1) Gallareta escudete rojo/Red-fronted CootThere lots of Red-fronted Coots in the pond. Some nest building or already with chicks or chicks already grown. © Claudia y Tito Di Mauro
Pied-billed Grebe
Podilymbus podiceps
Macá pico grueso J/Pied-billed Grebe J© Claudia y Tito Di Mauro
Chestnut-capped Blackbird
Chrysomus ruficapillus
Varillero congo R/Chestnut-capped Blackbird BFemale and juvenile © Claudia y Tito Di Mauro

Pseudoautomeris grammivora
Pseudoautomeris grammivora© Amelia Besana

Black-headed Duck
Heteronetta atricapilla
05-02-14 © Amelia Besana
Masked Duck
Nomonyx dominicus
05-02-14 © Amelia Besana

Wattled Jacana
Jacana jacana
04-02-14 © Claudia y Tito Di Mauro
South American Painted-snipe
Nycticryphes semicollaris
Aguatero/South American Painted-snipe Aguatero/South American Painted-snipe Aguatero/South American Painted-snipeSimón, a perseverant birdwatcher, took a walk around Viamonte to see the painted snipe before going to Brasil for the census. As the census was not carried out due to bad climate conditions, a group of birdwatchers joined Simón in the hope of seeing this bird. And back they went to Viamonte under a persistent rain but the group did not lose heart. Fruitless, in the end, because the painted snipe did not show. Late in the afternoon the weather cleared up. Simón once more set off for the RECS and found he was not alone. observadores Others have had the same idea! Roberto Güller saw the painted snipe. Three minutes of glory to take photos. "Third time's a charm". And the icing on the cake this superb double rainbow. Arco iris/Rainbow © J. Simón Tagtachian
Lake Duck
Oxyura vittata
Pato zambullidor chico/Lake Duck © J. Simón Tagtachian
White-eyed Parakeet
Aratinga leucophtalma
Calancate ala roja/White-eyed Parakeet© J. Simón Tagtachian
Southern Caracara
Caracara plancus
Carancho/Southern CaracaraA Tropical Kingbird
Tyrannus melancholicus driving this caracara away © J. Simón Tagtachian