News - May 2015

Yellow-chinned Spinetail
Certhiaxis cinnamomeus
Curutié colorado/Yellow-chinned  Spinetail© Carlos González Ledo
Rufous-sided Crake
Laterallus melanophaius
Burrito común/Rufous-sided Crake© Carlos González Ledo
Wren-like Rushbird
Phleocryptes melanops
Junquero/Wren-like Rushbird© Carlos González Ledo
White-lined Tanager
Tachyphonus rufus
Frutero negroM/White-lined TanagerMMale © Carlos González Ledo
White-lined Tanager
Tachyphonus rufus
Frutero negroH/White-lined TanagerFFemale © Carlos González Ledo
Assorted fauna and two flowers
Golden Silk Orb-weaber
Nephila clavipes
Araña seda de oro/Golden Silk Orb-weaberPosing as an insect © Sergio Cusano
Bumblebee
Bombus sp.
Abejorro/Bumblebee© Sergio Cusano
Tailed Sulphur
Phoebis neocypris neocypris
Azufrada coluda/Tailed Sulphur© Mario Martín Chimento
Ghost Yellow
Eurema albula sinoe
Blanquita/Ghost Yellow© Mario Martín Chimento

Coraliomela quadrimaculata
Vaquita de las palmeras/Coraliomela quadrimaculata© J. Simón Tagtachian
Band-eyed drone fly
Eristalinus taeniops
Mosca tigre/Band-eyed drone fly© Sergio Cusano
Creole frog
Creole Frog
Rana criolla/Creole frog© Dolores Fernández
Coypu
Myocastor coypus
Coipo/Coypu© Claudia y Diego Bastías
Shrimp Plant
Justicia brandegeeana
Camarón/Shrimp Plant© Carlos González Ledo
Purple secretia
Tradescantia pallida
Tradescantia purpúrea/Purple secretia© J. Simón Tagtachian
New butterfly species: Ocola Skipper
Panoquina ocola ocola
Aguzada común/Ocola Skipper© Hugo Aguilar
Least Grebe
Tachybaptus dominicus
Macá gris/Least Grebe© J. Simón Tagtachian
On the last day of May Diego Carús found it. It had not been seen for some time
Snail Kite
Rostrhamus sociabilis
Caracolero/Snail Kite Caracolero/Snail Kite© J. Simón Tagtachian
Green Kingfisher
Chloroceryle americana
Martín pescador chico/Green Kingfisher© J. Simón Tagtachian
Green-winged Saltator
Saltator caerulescens
Pepitero verdoso/Green-winged Saltator© J. Simón Tagtachian



Kelp Gull
Larus dominicanus
Gaviota cocinera/Kelp Gull© J. Simón Tagtachian
Adulto abajo, inmaduro arriba
Rana roncadora/Snoring frog© Dolores Fernández
Rana roncadora/Snoring frog© Dolores Fernández
Rana roncadora/Snoring frog© Sergio Cusano
It is quite common to see this little frog in the outskirts of cities and also to find them inside our houses, especially in humid places like bathrooms. In Sergio's photo the frog is on one side of a chemical bath. Adhesive disks facilitate climbing.
New bird species: Sharp-shinned Hawk
Accipiter striatus
Esparvero común/Sharp-shinned Hawk Esparvero común/Sharp-shinned Hawk Esparvero común/Sharp-shinned Hawk© Hugo Aguilar
Primer registro fotográfico de esta especie
Some more photos by Hugo Aguilar
American Kestrel
Falco sparverius
Halconcito colorado/American Kestrel© Hugo Aguilar
White-tipped Plantcutter
Phytotoma rutila
Cortarramas/White-tipped Plantcutter© Hugo Aguilar
Sayaca Tanager
Thraupis sayaca
Celestino/Sayaca Tanager© Hugo Aguilar
Ultramarine Grosbeak
Cyanocompsa brissonii
Reinamora grande/Ultramarine Grosbeak© Hugo Aguilar
Harris's Hawk
Parabuteo unicinctus
Gavilán mixto/Harris's Hawk© Hugo Aguilar
Yellow-billed Cardinal
Paroaria capitata
Cardenilla/Yellow-billed Cardinal© Hugo Aguilar
Red-crested Cardinal
Paroaria coronata
Cardenal común/Red-crested Cardinal© Hugo Aguilar
Hooded Siskin
Sporagra magellanica
Cabecitanegra común/Hooded Siskin© Hugo Aguilar
White-lined Tanager
Tachyphonus rufus
Frutero negro/White-lined Tanager© Hugo Aguilar
Nenday Parakeet
Aratinga nenday
Ñanday/Nenday Parakeet© Hugo Aguilar
Masked Gnatcatcher
Polioptila dumicola
Tacuarita azul/Masked Gnatcatcher© Hugo Aguilar
New butterfly species: Long-tailed Skipper
Urbanus proteus proteus
Rabuda verde común/Long-tailed Skipper© Hugo Aguilar
Rabuda verde común/Long-tailed Skipper© Mario Martín Chimento
And now the last butterflies of May
Red Peacock
Anartia amathea roeselia
Princesa roja/Red Peacock© Hugo Aguilar
Syma sister
Adelpha syma
Almirante menor/Syma sister© Hugo Aguilar
Eurytulus Scrub-Hairstreak
Strymon eurytulus
Frotadora enana/Eurytulus Scrub-Hairstreak© Hugo Aguilar
White-patched Duskywing
Chiomara autander autander
Emparchada/White-patched Duskywing© Hugo Aguilar
Cassius Blue
Leptotes cassius
Yuyera/Cassius Blue© Hugo Aguilar
Hermes Satyr
Hermeuptychia hermes
Hermes/Hermes Satyr© Hugo Aguilar
Cloudless Sulphur
Phoebis sennae marcellina
Azufrada común/Cloudless Sulphur© Hugo Aguilar
Southamerican Lady
Vanessa braziliensis
Dama pintada/Southamerican Lady© Hugo Aguilar



Blue-billed Black-Tyrant
Knipolegus cyanirostris
Viudita pico celeste H/Blue-billed Black-Tyrant F© Dolores Fernández
Viudita pico celeste H/Blue-billed Black-Tyrant F© Elsa y Guillermo
Fawn-breasted Tanager
Pipraeidea melanonota
Saíra de antifaz/Fawn-breasted Tanager© Elsa y Guillermo
Saíra de antifaz/Fawn-breasted Tanager© Dolores Fernández
We thank members of the COA La Plata who warned us and we hope they will send their photographs to include.
Vermilion Flycatcher
Pyrocephalus rubinus
Churrinche/Vermilion Flycatcher Churrinche/Vermilion FlycatcherWill it migrate norh o will it stay? © Claudia y Diego Bastías



New butterfly species: Laurentia Emperor
Doxocopa laurentia laurentia
Zafiro común/Laurentia Emperor© Mario Martín Chimento
Ocola Skipper?
¿Panoquina ocola ocola?
¿Aguzada común?/Ocola Skipper?© Sergio Cusano
It seems to be an Ocola Skipper but the angle does not show the length of the wings, which is conclusive. According to Ezequiel, our consultant, this butterfly is normally found in Autumn and says he saw on his last visit to the RECS but did not take a photograph. We leave as a may be. We hope to find it again, take a better picture so that there are no doubts
Last butterflies of May
Banded Longwing
Heliconius erato phyllis
Almendra común/Banded Longwing© Claudia y Diego Bastías
Ghost Yellow
Eurema albula sinoe
Blanquita/Ghost Yellow© Claudia y Diego Bastías
Juno
Dione juno juno
Juno/Juno Silverspot© Claudia y Diego Bastías
Julia
Dryas alcionea iulia
Julia© Sergio Cusano
Cassius Blue
Leptotes cassius
Yuyera/Cassius Blue© J. Simón Tagtachian
Yellow Lazy
Actinote carycina
Perezosa amarilla/Yellow Lazy© Sergio Cusano
Ithra Crescent
Ortilia ithra
Bataraza/Ithra Cresecent© Sergio Cusano
Dichrous Skipper
Theagenes dicrous
Falcada ribereña/Dichrous Skipper© Sergio Cusano
Claudina Crescent
Tegosa claudina
Claudina/Claudina Crescent© Sergio Cusano
Fiery Skipper
Hylephila phyleus
Saltarina amarilla/Fiery Skipper© Sergio Cusano



Coscoroba Swan
Coscoroba coscoroba
Coscoroba/Coscoroba Swan© Nicolás Giorgio
Coscoroba/Coscoroba Swan© Elsa y Guillermo
Several coscoroba swans can be seen in the pond. Among the last to arrive there is a family with members. Parents and five young. Young still showed some brown colouring on their bodies. Today are white. The pair left the young and went for a stride. The male displayed his wings in upright position and the female, shy, stayed behind.
White-tipped Plantcutter
Phytotoma rutila
Cortarramas JM/White-tipped Plantcutter JMMacho juvenil © Claudia y Diego Bastías
Sooty Tyrannulet
Serpophaga nigricans
Piojito gris/Sooty Tyrannulet© Claudia y Diego Bastías
White-banded Mockingbird
Mimus triurus
Calandria real/White-banded Mockingbird© Claudia y Diego Bastías
Our injured mockingbird is still alive. Being tailless is not that important. It will grow again but the absence of the superior mandible complicates the grasping of the food. How can it feed? Diego recorded this

© Claudia y Diego Bastías
White-faced Ibis
Phimosus infuscatus
Cuervillo de cañada/White-faced Ibis© J. Simón Tagtachian
Buff-winged Cinclodes
Cinclodes fuscus
Remolinera común/Buff-winged Cinclodes© J. Simón Tagtachian
Maguari Stork
Ciconia maguari
Cigüeña/Maguari Stork© J. Simón Tagtachian
Scarlet-headed Blackbird
Amblyramphus holosericeus
Federal/Scarlet-headed Blackbird© J. Simón Tagtachian
Campo Flicker
Colaptes campestris
Carpintero campestre/Campo Flicker© J. Simón Tagtachian
Grey-necked Wood-Rail
Aramides cajaneus
Chiricote/Grey-necked Wood-Rail© J. Simón Tagtachian
Southern Lapwing
Vanellus chilensis
Tero común/Southern Lapwing© J. Simón Tagtachian
Masked Gnatcatcher
Polioptila dumicola
Tacuarita azul/Masked Gnatcatcher© J. Simón Tagtachian
Blue-black Grassquit
Volatinia jacarina
Volatinero J/Blue-black Grassquit J© Claudia y Diego Bastías
On May 19th Diego photgraphed this bird on Canal Viamonte Path where the lantanas are the meeting point for butterflies. There it was feeding on moths. The bill did not fit for a small bird usually seen in Costanera. He consulted Jorge La Grotteria and Luis Pagano who coincided that this was a juvenile Blue-black Grassquit. This young may have not migrated back to the north. This species comes to the south to reproduce and at that time it is found in the center and north of the country till the Provincia de Buenos Aires.
Male and female look quite different. The male is shiny bluish black and the female is brown, generally speaking. It is typical of this bird to jump up from its perch showing its white axillaries and underwing coverts.
Jorge told us that a register of this bird had been sent to his web site www.ecoregistros.org. This female was photographed on April 11th by Martín Ferrari, whom we thank for letting us share it here. Ideal to see the characteristics of a female. Brown at the back and buff below with heavy streaks. Weak eyering.
Volatinero H/Blue-black Grassquit F© Martín Ferrari
Great Grebe
Podiceps major
Macá grande/Great Grebe© Sergio Cusano


© Cora Rimoldi
House Sparrow
Passer domesticus
Gorrión/House Sparrow Gorrión/House Sparrow© Sergio Cusano


© Cora Rimoldi Sometimes a puddle of water, other times a puddle of loose ground. Sparrows get dusty by wriggling vigorously on the ground and flattering their wings so that dust forms a cloud to fall on their bodies. It is believed that they do so to control parasites and/or to remove oily substances from their feathers.
Sharp-billed Canastero
Asthenes pyrrholeuca

© Claudia y Diego Bastías
Difficult to see, but at least spotted by its vocalization
Cattle Tyrant
Machetornis rixosa
Picabuey/Cattle Tyrant© Sergio Cusano
White-crested Tyrannulet
Serpophaga subcristata
Piojito común/White-crested Tyrannulet© Sergio Cusano
Snowy Egret
Egretta thula
Garcita blanca/Snowy Egret© Sergio Cusano
Narrow-billed Woodcreeper
Lepidocolaptes angustirostris
Chinchero chico/Narrow-billed Woodcreeper© Sergio Cusano
Double-collared Seedeater
Sporophila caerulescens
Corbatita común H/Double-collared Seedeater F© Sergio Cusano
With their mouths full
Calandria grande
Mimus saturninus
Calandria grande/Chalk-browed MockingbirdEating the fruit of
Melia azederach © Sergio Cusano
Masked Gnatcatcher
Polioptila dumicola
Tacuartia azul/Masked GnatcatcherWith a succulent insect © Sergio Cusano
Green-barred Woodpecker
Colpates melanochloros
Carpintero real/Green-barred WoodpeckerCatching ants © Sergio Cusano
Unicoloured Blackbird
Agelasticus cyanopus
Varillero negro/Unicoloured BlackbirdWith a fruit of... © Sergio Cusano
Giant Wood-Rail
Aramides ypecaha
Ipacaá/Giant Wood-Rail© Sergio Cusano
High tide río crecido2 SAC 5 15

río crecido1 SAC 5 15

río crecido SAC 5 15© Sergio Cusano
Harris's Hawk
Parabuteo unicinctus
Gavilán mixto/Harris's Hawk© Claudia y Diego Bastías

Gavilán mixto/Harris's Hawk© Sergio Cusano
Sooty Tyrannulet
Serpophaga nigricans
Piojito gris/Sooty Tyrannulet© Claudia y Diego Bastías
White-lined Tanager
Tachyphonus rufus
Frutero negro H/White-lined Tanager JHembra © Claudia y Diego Bastías
Coscoroba Swan
Coscoroba coscoroba
Coscoroba/Coscoroba Swan© Claudia y Diego Bastías
Yellow-chinned Spinetail
Certhiaxis cinnamomeus
Curutié colorado/Yellow-chinned Spinetail Curutié colorado/Yellow-chinned SpinetailAlways moving around the giant arrows
© Nicolás Giorgio
Sooty Tyrannulet
Serpophaga nigricans
Piojito gris/Sooty Tyrannulet

Piojito gris/Sooty Tyrannulet

Piojito gris/Sooty Tyrannulet © Nicolás Giorgio
Creamy-bellied Thrush
Turdus amaurochalinus
Zorzal chalchalero/Creamy-bellied Thrush© Nicolás Giorgio



Ultramarine Grosbeak
Cyanocompsa brissonii
Reinamora grande CYDB 5 15© Claudia y Diego Bastías
Butterflies and moths of May
Southern Fritillary
Euptoieta hortensia
Hortensia/Southern Fritillary© Sergio Cusano
Julia
Dryas iulia alcionea
Julia/Julia© Claudia y Diego Bastías
Celmis Satyr
Ypthimoides celmis
Marrón del pastizal/Celmis Satyr© Sergio Cusano

Melanchroia aterea
Melanchroia aterea© Claudia y Diego Bastías
Common Yellow
Eurema deva
Limoncito común/Common Yellow© Sergio Cusano
Monarch
Danaus erippus
Monarca/Monarch© Sergio Cusano
Mexican Silverspot
Dione moneta
Moneta/Mexican Silverspot© Silvia González
Gulf Fritillary
Agraulis vanillae maculosa
Espejitos/Gulf Fritillary© Silvia González
Moneta-espejitos/M. Silverspot- G. Fritillary© Sergio Cusano
Before the two butterflies separately. Mexican Silverspot is a butterfly from the north area of the country. Along with Sergio we discovered this butterfly in the reserve last year. It has been here ever since. and plenty of individuals can be seen. The Gulf Fritillary belongs to this area and is very common in the reserve. Look at the differences of size, colour and the lack of silvery spots on Mexican Silverspot.
Southern Buckeye
Junonia genoveva hilaris
cuatro ojos SAC 5 15© Sergio Cusano
Bella Mapwing
Hypanarthia bella
Bellísima común/Bella Mapwing© Sergio Cusano
April stragglers
Snout
Libytheana carinenta
Picuda/Snout© Victoria Mansilla

Leucanella viridescens
Leucanella viridescens© Victoria Mansilla
Lantana Scrub-Hairstreak
Strymon bazochii
Frotadora enana/Lantana Scrub-Hairstreak© Victoria Mansilla
Common Lazy
Actinote pellenea
Perezosa común/Common Lazy© Victoria Mansilla



Green Lacewing
Chrysoperla externa
Ala de encaje verde/Green Lacewings© Sergio Cusano
This insect belongs in the Family Chrysopidae of the Order Neuroptera. It is calles lacewings and they may be geen or brown. Those of this family are green. The wings of the adult are translucid and they rest in a gable roof-like way on the body. They are also named "stinkfly" due to the nasty smell they expel when threatened. These insects are quite beneficial to man since both the larvae and the adults predate voraciously on aphids, butterfly larvar and mite.
Huevos de crisópido/Chrysopid eggs© Flor
It is characteristic of this family the way they lay eggs. The female protects them from predators sticking them to peduncles. This peduncle is a drop of an adhesive substance which is attached to a stalk and extended moving the abdomen upward. It forms a thread which becomes rigid. The egg is deposited at the tip. This is an egg deposition of a chrysopid, but we do not know whether it belongs to this species.



Mourning Sierra-Finch
Phrygilus fruticeti
Yal negro/Mourning Sierra-Finch Yal negro/Mourning Sierra-Finch © Claudia y Diego Bastías
Sharp-billed Canastero
Asthenes pyrrholeuca
Canastero coludo/Sharp-billed CanasteroAs Diego says; "This brownish ball is a canastero"
© Claudia y Diego Bastías
Southern Screamer
Chauna torquata
Chajá/Southern ScreamerOne out of a group of 10
© Claudia y Diego Bastías
Spotted Rail
Pardirallus maculatus
Gallineta overa/Spotted RailPhotograped on May 3rd © Daniel Zelener
Blue-billed Black-Tyrant
Knipolegus cyanirostris
Viudita pico celeste H/Blue-billed Black-Tyrant FFemale © Claudia y Diego Bastías
Diademed Tanager
Stephanophorus diadematus
Frutero azul/Diademed Tanager© Claudia y Diego Bastías
Many-coloured Rush-Tyrant
Tachuris rubigastra
Tachurí sietecolores/Many-coloured Rush-Tyrant© Claudia y Diego Bastías
White-banded Mockingbird
Mimus triurus
calandria real/White-banded Mockingbird
© Claudia y Diego Bastías
Calandria real/White-banded Mocking-bird
© Daniel ZelenerCalandria real/White-banded Mockingbird
© Claudia y Diego Bastías
Tailless and with most superior mandible broken. What may have happened to this mockingbird? Photos taken on May 7th, 9th and 11th



Birds of the survey We keep adding species. Up until now there are 113 species. See the results
Yellow-billed Tit-Tyrant
Anairetes flavirostris
Cachudito pcio amarillo/Yellow-billed Tit-Tyrant© Álvaro Ortiz Naretto
Spotted Rail
Pardirallus maculatus
Gallineta overa/ Spotted Rail© Daniel Zelener
Gallineta overa/ Spotted RailRinged bird © Daniel Zelener
Ringed Kingfisher
Megaceryle torquata
Martín pescador grande/Ringed Kingfisher© Elsa y Guillermo
Striped Owl
Pseudoscops clamator
Lechuzón orejudo/Striped Owl© Leo Crudo
Lechuzón orejudo/Striped Owl© Sergio Cusano
Lechuzón orejudo/Striped Owl© Gustavo F. Brahamian
Ferruginous Pygmy-Owl
Glaucidium brasilianum
Caburé chico/Ferruginous Pygmy-Owl© Paloma Borghello
Cinnamon Teal
Anas cinnamomeus
Pato colorado H/Cinnamon Teal FFemale © Laura Dodyk
Hepatic Tanager
Piranga flava
Fueguero común M/Hepatic Tanager MMale © Mario Martín Chimento
Fueguero común H/Hepatic Tanager FFemale © J. Simón Tagtachian
Scarlet-headed Blackbird
Amblyramphus holosericeus
Federal/Scarlet-headed Blackbird © Luis Monti
Green Kingfisher
Chloroceryle americana
Martín pescador chico/Green Kingfisher© Sergio Cusano
Martín pescador chico/Green Kingfisher © Gustavo F. Brahamian
Sayaca Tanager
Thraupis sayaca
Celestino/Sayaca Tanager© Silvia Ana González
Greyish Saltator
Saltator caerulescens
Pepitero gris/Grayish Saltator © J. Simón Tagtachian
Great Pampa-Finch
Embernagra platensis
Verdón/Great Pampa-Finch © Silvia Ana González
Rufous-sided Crake
Laterallus melanophaius
Burrito común/Rufous-sided Crake© Álvaro Ortiz Naretto
Burrito común/Rufous-sided Crake © Sergio Cusano
Yellow-chevroned Parakeet
Brotogeris chiriri
Catita chirirí/Yellow-chevroned Parakeet © Sergio Cusano
Cocoi Heron
Ardea cocoi
Garza mora/Cocoi Heron © J. Simón Tagtachian
Wren-like Rushbird
Phleocryptes melanops
Junquero/Wren-like Rushbird © J. Simón Tagtachian
Plumbeous Rail
Laterallus melanophaius
Gallineta común/Plumbeous Rail© Gustavo F. Brahamian
Gallineta común/Plumbeous Rail © Sergio Cusano
Blue-and-white Swallow
Pygochelidon cyanoleuca
Golondrina barranquera/Blue-and-white Swallow © J. Simón Tagtachian
Spectacled Tyrant
Hymenops perspicillatus
Pico de plata/Spectacled Tyrant © Silvia Ana González
Blue-and-yellow Tanager
Pipraeidea bonariensis
Naranjero M/Blue-and-yellow Tanager © Mario Martín chimento
Masked Gnatcatcher
Polioptila dumicola
Tacuarita azul/Masked Gnatcatcher© Mario Martín chimento
Checkered Woodpecker
Veniliornis mixtus
Carpintero bataraz chico H/Checkered Woodpecker FFemale © Álvaro Ortiz Naretto
Rufescent Tiger-Heron
Tigrisoma lineatum
Hocó colorado J/Rufescent Tiger-Heron JJuvenile © Álvaro Ortiz Naretto
Yellow-winged Blackbird
Agelasticus thilius
Varillero ala amarilla/Yellow-winged Blackbird © J. Simón Tagtachian
Rosy-billed Pochard
Netta peposaca
Pato picazo/Rosy-billed Pochard © Silvia Ana González
Fulvous Whistling-Duck
Dendrocygna bicolor
Sirirí colorado/Fulvous Whistling-Duck© Sergio Cusano
World Migratory Bird Day
The World Migratory Bird Day is celebrated on the second weekend of May. The objective is to raise awareness about the conservation and habitats of migratory birds. This year's theme is "Energy: Make it bird-friendly". It emphasizes the need of technologies which bear in mind migratory birds. Migratory birds are affected by the generation and distribution of these sources and cause great mortality to them.
To celebrate the occasion the COARECS invited observers to make a bird count.
grupo de observadores 5 15

Very early in the morning censo JST 5 15View of the Coypu Pond at 7:36 am. © J. Simón Tagtachian
censo SAC 5 15View of the Coypu Pond at 7:47 am. © Sergio Cusano
vistas censo AON 5 15View of the Duck Pond at 8:18 am. © Álvaro Ortiz Naretto

At mid morning the climate looked better. vistas censo1 AON 5 15Meeting Point at 10:45 am © Álvaro Ortiz Naretto

At 1 p.m. everybody gathered at the Visitors' Center for the bird count. censo2 JST 5 15 © J. Simón Tagtachian
censo3 JST 5 15 © J. Simón Tagtachian
The count showed a total of 108 bird species, an encouraging figure in itself. The final result was 110. To see the results
Variable Oriole
Icterus pyrrhopterus
Boyerito/Variable Oriole© Daniel Zelener
Ringed Kingfisher/strong>
Megaceryle torquata
Martín pescador grande/Ringed Kingfisher Martín pescador grande/Ringed Kingfisher© Claudia y Diego Bastías
New butterfly species: Plain Longtail
Urbanus simplicius
Rabuda simple/Plain Longtail© Victoria Mansilla
New butterfly species: Red Peacock
Anartia amathea roeselia
Princesa roja/Red Peacock Princesa roja/Red Peacock© Sergio Cusano
Wood Stork
Mycteria americana

On Sunday, 5th of May at midmorning I filmed this group of woodstorks climbing on to thermal currents to begin their journey to the north. I immediatley associated the scene to their migration. It is by late summer (and this year they stayed till the very end) when these big flocks can be seen.
This scenario is not seen when they arrive here possibly because they separate previously, but when they leave they gather in certain places and if you are at the right moment and place you can enjoy this magnificent view.
Se aconseja verlo a pantalla completa © Cora Rimoldi

This group was ascending the thermal current, which means they overnighted at the reserve. There were approximately 75 individuals. I suppose they must have arrived on Friday and had to stay due to the rain. On Sunday, instead, the day was beautiful. At mid morning day they took off with the aid of thermal currents. I only saw this group, but luckily from another position Daniel and Martín observed another group flying from the south and tell us these two groups joined. Tuyuyú/Wood Stork© Daniel Zelener

Tuyuyú/Wood Stork© Daniel Zelener

Tuyuyú/Wood Stork© Daniel Zelener
Daniel's photos were taken at 10:26. This is the group flying from the south. Almost 65 individuals total this group.

An hour later they saw a bigger flock also flying from the south. 180 individuals formed this group and there were six stowaway roseate spoonbills Tuyuyú/Wood Stork© Daniel Zelener
Tuyuyú/Wood StorkPhotos taken at 11:39 © Daniel Zelener

But this is not the end of the story. On Monday Diego photographed another group which was ascending the thermal current. This means there must have been more bouts of woodstorks and this group descended here to overnight. Tuyuyú/Wood Stork© Claudia y Diego bastías

320 woodstorks either passed or stayed at the reserve during migration as is accouted for by the photos, but I believe there were too many more. This fact makes us evaluate the importance of this reserve. Not only for the life it supports and we daily see but for those that use it as a stopover to rest or feed. The woodstork is one these examples. It does not stay long at the reserve but overnights here in their migration journey. Get to know and spread the potentialities of the reserve helps to reinforce its values.



Green Kingfisher
Chloroceryle americana
Martín pescador chico/Green Kingfisher© J. Simón Tagtachian
Least Grebe
Tachybaptus dominicus
Macá gris/Least Grebe© J. Simón Tagtachian
Yellow-chinned Spinetail
Certhiaxis cinnamomeus
Curutié colorado/Yellow-chinned Spinetail© Sergio Cusano
Great Pampa-Finch
Embernagra platensis

© Cora Rimoldi
Straneck's Tyrannulet
Serpophaga griseicapilla
Piojito trinador/Straneck's Tyrannulet Identified by its song © Sergio Cusano
Scarlet-headed Blackbird
Amblyramphus holosericeus
Federal J/Scarlet-headed Blackbird JJuvenile © Sergio Cusano
Eared Dove
Zenaida auriculata
Torcaza común J/Eared Dove JJuvenile © Sergio Cusano
Brazilian Teal
Amazonetta brasiliensis
Pato cutirí/Brazilian Teal© J. Simón Tagtachian
White-tufted Grebe
Rollandia rolland
Macá común/White-tufted GrebeWith a full mouth © Sergio Cusano