News - March 2015

Ultramarine Grosbeak
Cyanocompsa brissonii
Reinamora grande H/Ultramarine Grosbeak FFemale © Victoria Mansilla
Chenopodium
Chenopodium ambrosioides
Paico/Chenopodium© Silvia Loiacono
This native plant h was used as an anthelmintic, that is to control internal parasites in humans. Its careless use caused too many intoxications that its sale has been prohibited.
It has a strong odour when it turns brown and leaves are rubbed.
Mirlinton
Sechium edule
Para del aire/Mirlinton© Victoria Mansilla
It belongs in the Cucurbits. It is a climbing plant with big leaves. There is one specimen on the right hand at the beginning of the Viamonte Canal. It is easy to spot due to its fruits which are big and spiny. As they mature they turn whitish. Both the fruit and the root are used as human food.

Dolychandra cynanchoides
Sacha huasca/Dolichandra cynanchoides© Flor
Smooth beggartick
Bidens laevis
Bidens laevis/Smooth beggartick© Sergio Cusano
Longflower evening primrose
Oenothera affinis
Flor de la oración/Longflower evening primrose© Sergio Cusano
Striped Rosemallow
Hibiscus cisplatinus
Rosa de río/Striped Rosemallow© Victoria Mansilla
Green-barred Woodpecker
Colaptes melanochloros
Carpintero real/Green-barred Woodpecker SEP 3 15© Sebastián Perrone
Sebastián showed us this woodpecker taking its head out of a hole and its tail out of another. Two nests which somehow ended up connected internally. In the photo the distance seemed too long te be one woodpecker. He took us to the place and though the woodpecker was no longer there we checked the distance was not such. In fact it was only an effect.
Sebastián, who came from far away - he lives in Campana - also sent us a male Green Kingfisher, one the four kingfishers seen that day, a Guira Cuckoo and a White-tufted Grebe.
Martín pescador chico M/Green Kingfisher MGreen Kingfisher
Chloroceryle americana© Sebastián Perrone

Pirincho/Guira CuckooGuira Cuckoo
Guira guira© Sebastián Perrone

Macá común/White-tufted GrebeWhite-tufted Grebe
Rollandia rolland© Sebastián Perrone
Unicoloured Blackbird
Agelasticus cyanopus
Varillero negro/Unicoloured Blackbird© Carlos González Ledo

Varillero negro/Unicoloured Blackbird© Carlos González Ledo

Varillero negro/Unicoloured Blackbird© J. Simón Tagtachian

Varillero negro/Unicoloured Blackbird© Carlos González Ledo
White-tufted Grebe
Rollandia rolland
Macá común/White-tufted Grebe© Carlos González Ledo
What counts here is that there are small fish in the pond
Coscoroba Swan
Coscoroba coscoroba
oscoroba/Coscoroba Swan© Carlos González Ledo
With a snail going down the neck

Silver argiope
Argiope argentata
Silver argiope
27-03-15 © Sergio Cusano
Silver argiope
27-03-15 © Sergio Cusano
It belongs into the family Araneidae. This spider is not considered dangerous. Though in kids, weak or allergic people there may be complications. In the photo above we can see some threads are thicker forming a zig zag pattern. These decorations are called stabilimentum (stabilimenta in plural) and its function is a subject of debate.

Cucurbit beetle
Diabrotica speciosa
Cucurbit beetle
28-03-15 © Flor A Modeo
Cucurbit beetle
28-03-15 © Flor A Modeo
This beetle belongs into the family Chrysomelidae. It is considered a pest. It feeds on vegetable leaves and flowers reducing the production of fruits. In the photo below the beetle is eating a Moonflower Ipomoea alba. It seems to be savouring an anther. Its larvae feed on roots.

Camuati Wasp
Polybia scutellaris
Camuati Wasp
28-03-15 © J. Simón Tagtachian
Camuati Wasp
28-03-15 © J. Simón Tagtachian
More butterflies in March
Lantana Scrub-Hairstreak
Strymon bazochiiFrotadora enana/Lantana Scrub-Hairstreak© Victoria Mansilla
Lantana Scrub-Hairstreak
Strymon bazochii
Frotadora enana/Lantana Scrub-Hairstreak© Victoria Mansilla
Southern Fritillary
Euptoieta hortensia
Hortensia/Southern Fritillary© Sergio Cusano
Southern Fritillary
Euptoieta hortensia
Hortensia/Southern Fritillary© Sergio Cusano
American White Skipper
Heliopyrgus americanus bellatrix
Ajedrezada de lunar/American White Skipper© Flor
American White Skipper
Heliopyrgus americanus bellatrix
Ajedrezada de lunar/American White Skipper© Flor
Argentine Checkered Skipper
Pyrgus orcynoides
Ajdrezada menorArgentine Checkered Skipper© Nicolás Giorgio
Argentine Checkered Skipper
Pyrgus orcynoides
Ajdrezada menorArgentine Checkered Skipper© Flor
Cassius blue
Leptotes cassius
Yuyera/Cassius blue© Sergio Cusano
Arawacus ellida
Arawacus ellida
Élida/Arawacus ellida© Victoria Mansilla

Atteva pustulella
Atteva pustulella© Flor

Melanchroia aterea
Melanchroia aterea© Victoria Mansilla
Polydamas Swallowtail
Polydamas battus
Borde de oro/Polydamas Swallowtail© J. Simón Tagtachian
Lyssipoides Metalmark
Riodina lyssipoides
Danzarina chica/Lyssipoides Metalmark© Victoria Mansilla
Eurytulus Scrub-Hairstreak
Strymon eurytulus
Frotadora común/Eurytulus Scrub-Hairstreak© Victoria Mansilla
Dichrous Skipper
Theagenes dichrous
Falcada ribereña/Dichrous Skipper© Sergio Cusano
Eufala Skipper
Lerodea eufala
Medialuna común/Eufala Skipper© Victoria Mansilla
Lesbia Sulphur
Colias lesbia
Isoca de la alfalfa/Lesbia Sulphur© Sergio Cusano
Mexican Silverspot
Dione moneta
Moneta/Mexican Silverspot© Sergio Cusano
Mexican Silverspot
Dione moneta
Moneta/Mexican Silverspot© Victoria Mansilla
Gulf Fritillary
Agraulis vanillae maculosa
Espejitos/Gulf Fritillary© Diego Carús
Gulf Fritillary
Agraulis vanillae maculosa
Espejitos/Gulf Fritillary© Gustavo F. Brahamian
Fiery Skipper
Hylephila phyleus
Saltarina amarilla/Fiery Skipper© Victoria Mansilla
Chilean Lady
Vanessa carye
Dama manchada/Chilean Lady© Sergio Cusano
Claudina Crescent
Tegosa claudina
Claudina/Claudina Crescent© Nicolás Giorgio
Monarch
Danaus erippus
Monarca/Monarch© Sergio Cusano
Diego observed a female White-tipped Plantcutter near the Viamonte Cabin. The first winter bird to arrive
Mirasol común
Ixobrychus involucris
Mirasol común/Stripe-backed BitternSeen on March 3rd © Walter Liriel Umpierrez
Green Kingfisher
Chloreceryle americana
Martín pescador chico M/Green Kingfisher MThis male was with two other kingfishers when it was photographed and we were away from them and had a female in front of us.
© J. Simón Tagtachian
Snail Kite
Rostrhamus sociabilis
Caracolero/Snail Kite Caracolero/Snail Kite© J. Simón Tagtachian
Red-eyed Vireo
Vireo olivaceus
Chiví común/Red-eyed Vireo© J. Simón Tagtachian
White-faced Whistling-Duck
Dendrocygna viduata
Sirirí pampa/White-faced Whistling-DuckA flock of 138 individuals © J. Simón Tagtachian
Golden-crowned Warbler
Basileuterus culicivorus
Arañero coronado chico/Golden-crowned Warbler © J. Simón Tagtachian
Ducks on the wing Patos/DucksShowing the speculum a Brazilian duck on the left and all the rest, Silver Teals
© Gustavo F. Brahamian
Glittering-bellied emerald
Chlorostilbon lucidus
Picaflor comúnH/Glittering-bellied emerald FA female at
Chorisia speciosa© J. Simón Tagtachian
Cinnamon Teal
Anas cinnamomea
Pato coloradoH/Cinnamon TealFFemale © Carlos González Ledo
White-lined Tanager
Tachyphonus rufus
Frutero negroJ/White-lined Tanager J© J. Simón Tagtachian
A bird not so frequently seen as before. A young and a female
Frutero negro H/White-lined Tanager F© J. Simón Tagtachian
White-tufted Grebe
Rollandia rolland
Macá común/White-tufted Grebe© Gustavo F. Brahamian
Ya hya 50 individuos
Green-winged Saltator
Saltator similis
Pepitero verdoso/Green-winged Saltator© Carlos González Ledo
Bat Murciélago/Bat© J. Simón Tagtachian
No more information than the one provided by the photo. Simón tells us that three individuals appeared.
Brazilian Teal
Amazonetta brasiliensis
Pato cutirí/Brazilian Teal© Sergio Cusano
Ringed Teal
Callonetta leucophrys
Pato de collar/Ringed TealYoung © Sergio Cusano
Rosy-billed Pochard
Netta peposaca
Pato picazo/Rosy-billed Pochard© Carlos González Ledo
Pato picazo/Rosy-billed Pochard© Claudia y Diego Bastías
A new family of Rosy-billed Pochard and another one with older ducklings.
Southern Lapwing
Vanellus chilensis
Tero común/Southern Lapwing© Sergio Cusano
Tropical Kingbird
Tyrannus melancholicus
Suirirí real/Tropical Kingbird© J. Simón Tagtachian
Brown-chested Martin
Progne tapera
Golondrina parda/Brown-chested Martin© Claudia y Diego Bastías
Plumbeous Wood-Rail
Pardirallus sanguinolentus
Gallineta común/Plumbeous Wood-Rail© Nicolás giorgio
Limpkin
Aramus guarauna
Caraú/Limpkin Caraú/Limpkin Caraú/Limpkin Caraú/LimpkinFotos © Nicolás Giorgio

© Claudia y Tito Di Mauro
Though we have not seen them nesting this is not the first limpkin family we find in the reserve since water and apple snails are back. This chicks are very small and at the end of the video four can be counted. To feed them is a very patient task. Limpkins do not just provide them food to the chicks. They must teach them how to extract the snail out of the shell. And that is quite a technique to learn.

Striated Heron
Butorides striata
25-03-15 © Claudia y Tito Di Mauro
See the Comparative chart of the 10 surveys organized by the CoaRecs
Green Kingfisher
Chloroceryle americana
Martín pescador chicoM/Green Kingfisher M© Diego Carús
Martín pescador chicoM/Green Kingfisher M© Diego Carús
Now, the male
Ultramarine Grosbeak
Cyanocompsa brissonii
Reinamora grandeM/Ultramarine GrosbeakMChanging into adult plumage
© Federico Andrés De Maio
Limpkin
Aramus guarauna
Caraú/Limpkin© Diego Carús
Caraú/Limpkin© Nicolás Giorgio
There are too many limpkins in the pond. Some time six had been counted. It is not strange to find chicks, even less chicks belonging to different clutches. Diego's are smaller and Nicolas's.
Yellow-billed Pintail and Yellow-billed Teal
Anas georgica - A. flavirostris
Maicer-barcino/Yellow-billed Pintail and Teal© Nicolás Giorgio
Since they are together, let's see the differences in head and neck.
Yellow-billed Teal has all its head dark brown. Short and robust neck. The eye is crossed by a black line which resembles it to a slanted eye.
Yellow-billed Pintail has reddish cinnamon crown and face and neck whitish. Slimmer and longer neck.
Acuáticas Acuáticas/Waterbirds© Diego Carús
Acuáticas/Waterbirds© Diego Carús
White-faced Whistling-Duck
Dendrocygna viduata
Sirirí pampa/White-faced Whistling-DuckA flock of 80 approximately © Diego Carús
Eared Dove
Zenaida auriculata
Torcaza común/Eared DoveA very odd juvenile © Diego Carús
Spectacled Tyrant
Hymenops perspicillatus
Pico de plataH/Spectacled Tyrant FFemale © Diego Carús
Harris's Hawk
Parabuteo unicinctus
Gavilán mixto/Harris's Hawk© Diego Carús
Wren-like Rushbird
Phleocryptes melanops
Junquero/Wren-like Rushbird© Diego Carús
Guira Cuckoo
Guira guira
pirincho/Guira Cuckoo© Diego Carús
Least Grebe
Tachybaptus dominicusMacá gris/Least Grebe© Diego Carús

© Claudia y Diego Bastías
Let's keep enjoying the Least Grebe
Bird Survey organized by the CoaRecs - Marche 21st, 2015 On Saturday 21st the Bird Survey was carried out as programmed. By noon the count reached 112 species and still the afternoon ahead to find some other surprise. The stars were no doubt the South American Painted-Snipe, which had been absent for more than a yera, the Red-Shoveler and the Yellow-billed Teal. First photos on the air and the final results of the Bird Survey
South American Painted-Snipe
Nycticryphes semicollaris
Aguatero/South American Painted-Snipe© Claudia y Tito
Aguatero/South American Painted-Snipe© Sergio Cusano
Yellow-billed Pintail
Anas georgica
Pato maicer/Yellow-billed Pintail© Sergio Cusano
Brazilian Teal
Amazonetta brasiliensis
Pato cutirí/Brazilian Teal© Sergio Cusano
Coscoroba Swan
Coscoroba coscoroba
Coscoroba/Coscoroba SwanVery early in the morning before the count began the group consisted of 11 coscoroba swans © Sergio Cusano
White-tufted Grebe
Rollandia rolland
Macá común/White-tufted GrebeAt least two groups of 15 or 20 individuals each were seen © Sergio Cusano
Snowy Egret
Egretta thula
Garcita blancaJ/Snowy EgretJYoung © Sergio Cusano
Great Pampa-Finch
Embernagra platensis
Verdón/Great Pampa-Finch© Sergio Cusano
Diego observed a male Red Shoveler resting on an islet at Coypu. Let us find it on the Bird survey Day to add it to the list.

Yellow-billed Pintail
Anas georgica
20-03-15 © Claudia y Diego Bastías
Masked Duck
Nomonyx dominicus
Pato fierro/Masked Duck© Victoria Mansilla
Snowy Egret
Egretta alba
Garcita blanca/Snowy EgretAt Coypu Pond. More and more waterbirds are at the pond. This is a sign that the food chain is being recovered
© Claudia y Diego Bastías
Five species Acuáticas/Waterbirds© Victoria Mansilla
Rufescent Tiger-Heron
Tigrisoma lineatum
Hocó colorado/Rufescent Tiger-Heron© Victoria Mansilla
Masked Yellowthroat
Geothlypis aequinoctialis
Arañero cara negra/Masked Yellowthroat© Victoria Mansilla
Pied-billed Grebe
Podilymbus podiceps
Macá pico grueso/Pied-billed Grebe© Claudia y Diego Bastías
Ringed Teal
Callonetta leucophrys
Pato de collar/Ringed Teal© Claudia y Diego Bastías
Brazilian Teal
Amazonetta brasiliensis
Pato cutirí/Brazilian Teal© Victoria Mansilla
White-tufted Grebe
Rollandia rolland
Macá chico/White-tufted Grebe© Victoria Mansilla
Hooded Siskin
Sporagra magellanica
Cabecitanegra H/Hooded Siskin FFemale © Victoria Mansilla
Great Kiskadee
Pitangus sulphuratus
Benteveo comúnJ/Great KiskadeeJ© Victoria Mansilla
Yellow-billed Pintail
Anas georgica
Pato maicero/Yellow-billed Pintail © Claudia y Diego Bastías
The Yellow-billed Pintails are back! To the left a Silver Teal Maicero-barcino/Yellow-billed Teal -Pintail© Claudia y Diego Bastías
Together with a pair of Yellow-billed Teal. Two species that may be easily confused. With more detailed photos we will see the difference.
Small-billed Elaenia
Elaenia parvirostris
Fiofío pico corto/Small-billed Elaenia©Claudia y Diego Bastías
Bare-faced Ibis
Phimosus infuscatus
Cuervillo cara pelada/Bare-faced Ibis© Nicolás Giorgio
Spectacled Tyrant
Hymenops perspicillatus
Pico de plata M/Spectacled Tyrant M© José Alberto Lell
Narrow-billed Woodcreeper
Lepidocolaptes angustirostris
Chinchero chico/Narrow-billed Woodcreeper© José Alberto Lell
Least Grebe
Tachybaptus dominicus
Macá gris/Least GrebeSeen four consecutive weeks © J. Simón Tagtachian
Cinnamon Teal
Anas cinnamomea
Pato colorado/Cinnamon Teal© J. Simón Tagtachian
Green Kingfisher
Chloroceryle americana
Martín pescador chico H/Green Kingfisher FFemale © J. Simón Tagtachian
Tropical Kingbird
Tyrannus melancholicus
Suirirí real/Tropical Kingbird© Sergio Cusano
Maguari Stork
Ciconia maguari
Cigüeña/Maguari Stork© J. Simón Tagtachian
Variable Oriole
Icterus pyrrhopterus
Boyerito/Variable Oriole © Sergio Cusano
Striated Heron
Butorides striata
Garcita azulada/Striated Heron Feeding on dragonflies © Claudia y Diego Bastías
Brazilian Teal
Amazonetta brasiliensis
Pato cutirí/Brazilian TealThis male lost a limb © Claudia y Diego Bastías
Limpkin
Aramus guarauna
Caraú/Limpkin Diego observed this individual sitting for two days in a row. It seems to be OK. He was seen feeding too. © Claudia y Diego Bastías
Yellow-billed Cardinal
Paroaria capitata
Cardenilla/Yellow-billed Cardinal© Sergio Cusano
Brown-chested Martin
Progne tapera
Golondrina parda/Brown-chested Martin© Victoria Mansilla
Golondrina parda/Brown-chested Martin© Claudia y Diego Bastías
Taken on 8th and 10th of March the second clutch was peering out from the inside
New turtle species: Common snapping Turtle
Chelydra serpentina
Tortuga mordedora/Common snapping turtle© Diego Carús
Diego and Leonel discovered this turtle in the reserve .They suspected this could be a common snapping turtle. Unluckily their suspicions were right. This turtle is exotic. It is from the United States and is a real threat. It is very voracious and dangerous. One must be very careful when manipulating it since it moves its neck sideways very quickly and can cause serious bites. Claudio Bertonatti, former Operational Manager of the reserve and current consultant at the Felix de Azara Foundation , notified the authorities warning about the threat this turtle represents to the fauna. Walter Prado, of the herpetologists consulted to identify the turtle, wrote a complete article of this turtle (only in Spanish)
Butterflies of March
(The last five correspond to February)
Polydamas Swallowtail
Polydamas battus
Borde de oro/Polydamas Swallowtail© Victoria Mansilla
Polydamas Swallowtail
Polydamas battus
Borde de oro/Polydamas Swallowtail© Victoria Mansilla
Poltys Satyr
Parypthimoides poltys
Ocelada doble línea/Poltys Satyr© Victoria Mansilla
Celmis Satyr
Ypthimoides celmis
Marrón del pastizal/Celmis Satyr© Victoria Mansilla
Southern Buckeye
Hylephila phileus
Saltarina amarilla/Fiery Skipper© Victoria Mansilla
Southern Buckeye
Junonia genoveva hilaris
Cuatro ojos común/Southern Buckeye© Victoria Mansilla
Bella Mapwing
Hypanarthia bella
Bellísima común/Bella Mapwing© Victoria Mansilla
Bella Mapwing
Hypanarthia bella
Bellísima común/Bella Mapwing© Victoria Mansilla
Common Yellow
Eurema deva
Limoncito común/Common Yellow© Victoria Mansilla
Funeral Duskywing
Erynnis funeralis
Enlutada de blanco/Funeral Duskywing© Victoria Mansilla
Argentine Checkered Skipper
Pyrgus orcynoides
Ajedrezada menor/Argentine Checkered Skipper© Dolores Fernández
Fiery Skipper
Hylephila phileus
Saltarina amarilla/Fiery Skipper© Amelia Besana
Eufala Skipper
Leodea eufala
Medialuna común/Eufala Skipper© Sergio Cusano
Common Lazy
Actinote pellenea
Perezosa común/Actinote pellenea© Sergio Cusano
Least Grebe
Tachybaptus dominicus
Macá gris/Least GrebeStill in the reserve © Silvia Loiacono
Cinnamon Teal
Anas cyanoptera
Pato coloradoH/Cinnamon TealF© Sergio Cusano
Pato coloradoH/Cinnamon TealF© Elsa y Guillermo
American Kestrel
Falco sparverius
Halconcito colorado/American Kestrel© Sergio Cusano
Halconcito colorado/American Kestrel© J. Simón Tagtachian
Coscoroba Swan
Coscoroba coscoroba
Coscoroba/Coscoroba Swan© Sergio Cusano
Snail Kite
Rostrhamus sociabilis
Caracolero/Snail KiteJoven © J. Simón Tagtachian
Blue-and-white Swallow
Pygochelidon cyanoleuca
Golondrina  barranquera/Blue-and-white Swallow© J. Simón Tagtachian
Masked Duck
Nomonyx dominicus
Pato fierro/Masked Duck© Diego Carús
Fulvous Whistling-Duck
Dendrocygna bicolor
Sirirí colorado/Fulvous Whistling-DuckA new family © J. Simón Tagtachian
Striated Heron
Butorides striata
Garcita azulada/Striated Heron© Diego Carús
Picui Ground Dove
Columbina picui
Torcacita común/Picui Ground Dove© Sergio Cusano
Creole Duck
Caririna moschata domestica
Pato criollo/Creole Duck© Sergio cusano
White-faced Whistling-Duck
Dendrocygna viduata
Sirirí pampa/White-faced Whistling-Duck© Diego Carús
Some more fauna
Black-and-white Tegu Lizard
Salvator merianae
Lagarto overo/Black-and-white Tegu Lizard© Amelia Besana
Andrés Sehinkman tells us that the dark colouring is just an individual variation
Creole frog
Leptodactylus latrans
Rana criolla/Creole frog© Dolores Fernández
Juvenil
Coastal House Snake
Thamnodynastes strigatus
Culebra ocrácea/Coastal House Snake© Claudia y Tito Di Mauro
Brazilian Guinea Pig
Cavia aperea
Cuis/Brazilian Guinea Pig© Ignacio Aguledo