News - May 2015



Yellow-chinned Spinetail
Certhiaxis cinnamomeus
Yellow-chinned Spinetail
31-05-15 © Carlos González Ledo
Rufous-sided Crake
Laterallus melanophaius
Rufous-sided Crake
31-05-15 © Carlos González Ledo
Wren-like Rushbird
Phleocryptes melanops
Wren-like Rushbird
31-05-15 © Carlos González Ledo
White-lined Tanager
Tachyphonus rufus
White-lined Tanager
31-05-15 © Carlos González Ledo
White-lined Tanager
31-05-15 © Carlos González Ledo

Some fauna and flora
Tailed Sulphur
Phoebis neocypris neocypris
Azufrada coluda/Tailed Sulphur© Mario Martín Chimento
Ghost Yellow
Eurema albula sinoe
Blanquita/Ghost Yellow© Mario Martín Chimento
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

Golden Silk Orbweaver
Trichonephila clavipes
Golden Silk Orbweaver
03-05-15 © Sergio Cusano
Bumblebee
Bombus sp.
Bumblebee
24-05-15 © Sergio Cusano
Leaf beetle
Coraliomela quadrimaculata
Leaf beetle
29-03-16 © J. Simón Tagtachian
Band-eyed drone fly
Eristalinus taeniops
Band-eyed drone fly
24-05-15 © Sergio Cusano

New butterfly species: Ocola Skipper
Panoquina ocola ocola
Aguzada común/Ocola Skipper© Hugo Aguilar

Least Grebe
Tachybaptus dominicus
Least Grebe
31-05-15 © J. Simón Tagtachian
Snail Kite
Rostrhamus sociabilis
Snail Kite
31-05-15 © J. Simón Tagtachian
Snail Kite
31-05-15 © J. Simón Tagtachian
Green Kingfisher
Chloroceryle americana
Green Kingfisher
31-05-15 © J. Simón Tagtachian
Green-winged Saltator
Saltator similis
Green-winged Saltator
31-05-15 © J. Simón Tagtachian
Kelp Gull
Larus dominicanus
Kelp Gull
31-05-15 © J. Simón Tagtachian



New amphibian species: Snoring frog
Scinax granulatus
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
Sharp-shinned Hawk
15-05-15 © Hugo Aguilar
Sharp-shinned Hawk
15-05-15 © Hugo Aguilar
Sharp-shinned Hawk
15-05-15 © Hugo Aguilar

More photos by Hugo Aguilar
American Kestrel
Falco sparverius
American Kestrel
05-05-15 © Hugo Aguilar
White-tipped Plantcutter
Phytotoma rutila
White-tipped Plantcutter
28-05-15 © Hugo Aguilar
Sayaca Tanager
Thraupis sayaca
Sayaca Tanager
05-05-15 © Hugo Aguilar
Ultramarine Grosbeak
Cyanoloxia brissonii
Ultramarine Grosbeak
15-05-15 © Hugo Aguilar
Harris's Hawk
Parabuteo unicinctus
Harris's Hawk
28-05-15 © Hugo Aguilar
Yellow-billed Cardinal
Paroaria capitata
Yellow-billed Cardinal
15-05-15 © Hugo Aguilar
Red-crested Cardinal
Paroaria coronata
Red-crested Cardinal
28-05-15 © Hugo Aguilar
Hooded Siskin
Spinus magellanicus
Hooded Siskin
05-05-15 © Hugo Aguilar
White-lined Tanager
Tachyphonus rufus
White-lined Tanager
05-05-15 © Hugo Aguilar
Nenday Parakeet
Aratinga nenday
Nenday Parakeet
15-05-15 © Hugo Aguilar
Masked Gnatcatcher
Polioptila dumicola
Masked Gnatcatcher
28-05-15 © 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
Blue-billed Black-Tyrant
30-05-15 © Dolores Fernández
Blue-billed Black-Tyrant
30-05-15 © Elsa y Guillermo Marcaida
Fawn-breasted Tanager
Pipraeidea melanonota
Fawn-breasted Tanager
30-05-15 © Elsa y Guillermo Marcaida

The COA La Plata passed on the info

Fawn-breasted Tanager
30-05-15 © Dolores Fernández

The COA La Plata passed on the info

Vermilion Flycatcher
Pyrocephalus rubinus
Vermilion Flycatcher
27-05-15 © Claudia y Diego Bastías
Vermilion Flycatcher
27-05-15 © 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 Swan
30-05-15 © Nicolás Giorgio

Several coscoroba swans have arrived at the pond lately. Among them there was a family of 7, parents and 5 juveniles which still had brown marks. Now they are all white. They left the juveniles in a safe place and went for a ride.

Coscoroba Swan
30-05-15 © Elsa y Guillermo Marcaida

Several coscoroba swans have arrived at the pond lately. Among them there was a family of 7, parents and 5 juveniles which still had brown marks. Now they are all white. They left the juveniles in a safe place and went for a ride.

White-tipped Plantcutter
Phytotoma rutila
White-tipped Plantcutter
29-05-15 © Claudia y Diego Bastías
Sooty Tyrannulet
Serpophaga nigricans
Sooty Tyrannulet
29-05-15 © Claudia y Diego Bastías

White-banded Mockingbird
Mimus triurus
White-banded Mockingbird
29-05-15 © 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
31-01-15 © Claudia y Diego Bastías

White-faced Ibis
Plegadis chihi
White-faced Ibis
23-05-15 © J. Simón Tagtachian
Buff-winged Cinclodes
Cinclodes fuscus
Buff-winged Cinclodes
26-05-15 © J. Simón Tagtachian
Maguari Stork
Ciconia maguari
Maguari Stork
23-05-15 © J. Simón Tagtachian
Scarlet-headed Blackbird
Amblyramphus holosericeus
Scarlet-headed Blackbird
24-05-15 © J. Simón Tagtachian
Campo Flicker
Colaptes campestris
Campo Flicker
24-05-15 © J. Simón Tagtachian
Campo Flicker
Colaptes campestris
Campo Flicker
24-05-15 © J. Simón Tagtachian
Gray-necked Wood-Rail
Aramides cajaneus
Gray-necked Wood-Rail
17-05-15 © J. Simón Tagtachian
Southern Lapwing
Vanellus chilensis
Southern Lapwing
23-05-15 © J. Simón Tagtachian
Masked Gnatcatcher
Polioptila dumicola
Masked Gnatcatcher
24-05-15 © J. Simón Tagtachian

Blue-black Grassquit
Volatinia jacarina
Blue-black Grassquit
19-05-15 © 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.
Blue-black Grassquit
11-04-15 © Martín Ferrari

Great Grebe
Podiceps major
Great Grebe
24-05-15 © Sergio Cusano
24-05-15 © Cora Rimoldi

Swimming at the coast of the river


House Sparrow
Passer domesticus
House Sparrow
24-05-15 © Sergio Cusano
House Sparrow
24-05-15 © Sergio Cusano

Sharp-billed Canastero
Asthenes pyrrholeuca
24-05-15 © Claudia y Diego Bastías
Difficult to see but at least may be heard

Cattle Tyrant
Machetornis rixosa
Cattle Tyrant
24-05-15 © Sergio Cusano
White-crested Tyrannulet
Serpophaga subcristata
White-crested Tyrannulet
24-05-15 © Sergio Cusano
Snowy Egret
Egretta thula
Snowy Egret
24-05-15 © Sergio Cusano
Narrow-billed Woodcreeper
Lepidocolaptes angustirostris
Narrow-billed Woodcreeper
24-05-15 © Sergio Cusano
Double-collared Seedeater
Sporophila caerulescens
Double-collared Seedeater
24-05-15 © Sergio Cusano
Chalk-browed Mockingbird
Mimus saturninus
Chalk-browed Mockingbird
24-05-15 © Sergio Cusano

With fruit of white cedar Melia azederach

Masked Gnatcatcher
Polioptila dumicola
Masked Gnatcatcher
24-05-15 © Sergio Cusano
Green-barred Woodpecker
Colaptes melanochloros
Green-barred Woodpecker
24-05-15 © Sergio Cusano

Catching ants

Unicolored Blackbird
Agelasticus cyanopus
Unicolored Blackbird
01-05-15 © Sergio Cusano
Giant Wood-Rail
Aramides ypecaha
Giant Wood-Rail
03-05-15 © Sergio Cusano
Swollen river río crecido2 SAC 5 15

río crecido1 SAC 5 15

río crecido SAC 5 15© Sergio Cusano

Harris's Hawk
Parabuteo unicinctus
Harris's Hawk
19-05-15 © Claudia y Diego Bastías
Harris's Hawk
24-05-15 © Sergio Cusano
Sooty Tyrannulet
Serpophaga nigricans
Sooty Tyrannulet
22-05-15 © Claudia y Diego Bastías
White-lined Tanager
Tachyphonus rufus
White-lined Tanager
19-05-15 © Claudia y Diego Bastías
Coscoroba Swan
Coscoroba coscoroba
Coscoroba Swan
22-05-15 © Claudia y Diego Bastías
Yellow-chinned Spinetail
Certhiaxis cinnamomeus
Yellow-chinned Spinetail
19-05-15 © Nicolás Giorgio
Yellow-chinned Spinetail
19-05-15 © Nicolás Giorgio
Sooty Tyrannulet
Serpophaga nigricans
Sooty Tyrannulet
19-05-15 © Nicolás Giorgio
Sooty Tyrannulet
19-05-15 © Nicolás Giorgio
Sooty Tyrannulet
19-05-15 © Nicolás Giorgio
Creamy-bellied Thrush
Turdus amaurochalinus
Creamy-bellied Thrush
19-05-15 © Nicolás Giorgio
Ultramarine Grosbeak
Cyanoloxia brissonii
Ultramarine Grosbeak
18-05-15 © 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
Green Lacewing
03-05-15 © 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 larvae and mite.
Lacewing
Lacewing
14-03-15 © Flor A Modeo
t 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
Mourning Sierra-Finch
12-05-15 © Claudia y Diego Bastías
Mourning Sierra-Finch
12-05-15 © Claudia y Diego Bastías
Sharp-billed Canastero
Asthenes pyrrholeuca
Sharp-billed Canastero
12-05-15 © Claudia y Diego Bastías
Southern Screamer
Chauna torquata
Southern Screamer
12-05-15 © Claudia y Diego Bastías
Spotted Rail
Pardirallus maculatus
Spotted Rail
09-05-15 © Daniel Zelener
Blue-billed Black-Tyrant
Knipolegus cyanirostris
Blue-billed Black-Tyrant
11-05-15 © Claudia y Diego Bastías
Diademed Tanager
Stephanophorus diadematus
Diademed Tanager
11-05-15 © Claudia y Diego Bastías
Many-colored Rush Tyrant
Tachuris rubrigastra
Many-colored Rush Tyrant
11-05-15 © Claudia y Diego Bastías

White-banded Mockingbird
Mimus triurus
White-banded Mockingbird
07-05-15 © Claudia y Diego Bastías
White-banded Mockingbird
09-05-15 © Daniel Zelener
White-banded Mockingbird
11-05-15 © Claudia y Diego Bastías

Tailless and with most of the superior mandible broken. What may have happened to this mockingbird?



Birds of the survey We keep adding species. Up until now there are 113 species. See the results

Yellow-billed Tit-Tyrant
Anairetes flavirostris
Yellow-billed Tit-Tyrant
09-05-15 © Álvaro Ortiz Naretto
Spotted Rail
Pardirallus maculatus
Spotted Rail
09-05-15 © Daniel Zelener
Spotted Rail
09-05-15 © Daniel Zelener
Ringed Kingfisher
Megaceryle torquata
Ringed Kingfisher
09-05-15 © Elsa y Guillermo Marcaida
Striped Owl
Pseudoscops clamator
Striped Owl
09-05-15 © Leo Crudo
Striped Owl
09-05-15 © Sergio Cusano
Striped Owl
09-05-15 © Gustavo F. Brahamian
Ferruginous Pygmy-Owl
Glaucidium brasilianum
Ferruginous Pygmy-Owl
09-05-15 © Paloma Borghello
Cinnamon Teal
Anas cyanoptera
Cinnamon Teal
09-05-15 © Laura Dodyk
Hepatic Tanager
Piranga flava
Hepatic Tanager
09-05-15 © Mario Martín Chimento
Hepatic Tanager
09-05-15 © J. Simón Tagtachian
Scarlet-headed Blackbird
Amblyramphus holosericeus
Scarlet-headed Blackbird
09-05-15 © Luis Monti
Green Kingfisher
Chloroceryle americana
Green Kingfisher
09-05-15 © Sergio Cusano
Green Kingfisher
09-05-15 © Gustavo F. Brahamian
Sayaca Tanager
Thraupis sayaca
Sayaca Tanager
09-05-15 © Silvia Ana González
Grayish Saltator
Saltator coerulescens
Grayish Saltator
09-05-15 © J. Simón Tagtachian
Great Pampa-Finch
Embernagra platensis
Great Pampa-Finch
09-05-15 © Silvia Ana González
Rufous-sided Crake
Laterallus melanophaius
Rufous-sided Crake
09-05-15 © Álvaro Ortiz Naretto
Rufous-sided Crake
Laterallus melanophaius
Rufous-sided Crake
09-05-15 © Sergio Cusano
Yellow-chevroned Parakeet
Brotogeris chiriri
Yellow-chevroned Parakeet
09-05-15 © Sergio Cusano
Cocoi Heron
Ardea cocoi
Cocoi Heron
09-05-15 © J. Simón Tagtachian
Wren-like Rushbird
Phleocryptes melanops
Wren-like Rushbird
09-05-15 © J. Simón Tagtachian
Plumbeous Rail
Pardirallus sanguinolentus
Plumbeous Rail
09-05-15 © Gustavo F. Brahamian
Plumbeous Rail
09-05-15 © Sergio Cusano
Blue-and-white Swallow
Pygochelidon cyanoleuca
Blue-and-white Swallow
09-05-15 © J. Simón Tagtachian
Spectacled Tyrant
Hymenops perspicillatus
Spectacled Tyrant
09-05-15 © Silvia Ana González
Blue-and-yellow Tanager
Pipraeidea bonariensis
Blue-and-yellow Tanager
09-05-15 © Mario Martín Chimento
Masked Gnatcatcher
Polioptila dumicola
Masked Gnatcatcher
09-05-15 © Mario Martín Chimento
Checkered Woodpecker
Veniliornis mixtus
Checkered Woodpecker
09-05-15 © Álvaro Ortiz Naretto
Rufescent Tiger-Heron
Tigrisoma lineatum
Rufescent Tiger-Heron
09-05-15 © Álvaro Ortiz Naretto
Yellow-winged Blackbird
Agelasticus thilius
Yellow-winged Blackbird
09-05-15 © J. Simón Tagtachian
Rosy-billed Pochard
Netta peposaca
Rosy-billed Pochard
09-05-15 © Silvia Ana González
Fulvous Whistling-Duck
Dendrocygna bicolor
Fulvous Whistling-Duck
09-05-15 © 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
Variable Oriole
03-05-15 © Daniel Zelener
Ringed Kingfisher
Megaceryle torquata
Ringed Kingfisher
05-05-15 © Claudia y Diego Bastías
Ringed Kingfisher
05-05-15 © 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 - Migration



Wood Stork
Mycteria americana
03-05-15 © Cora Rimoldi
On Sunday, 3rd 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 is not the case 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.
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 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.
Wood Stork
03-05-15 © Daniel Zelener

Migration

Wood Stork
03-05-15 © Daniel Zelener

Migration

Wood Stork
03-05-15 © Daniel Zelener

Migration

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
Wood Stork
03-05-15 © Daniel Zelener

Migration

Wood Stork
03-05-15 © Daniel Zelener

Migration

Photos taken at 11:39.
But this is not the end of the story. On Monday Diego Bastías 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.
Wood Stork
04-05-15 © Claudia y Diego Bastías

Migración

320 woodstorks either passed or stayed at the reserve during migration as is accounted for by the photos, but there may have been 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 value.


Hepatic Tanager
Piranga flava
Hepatic Tanager
03-05-15 © Daniel Zelener
Green Kingfisher
Chloroceryle americana
Green Kingfisher
02-05-15 © J. Simón Tagtachian
Least Grebe
Tachybaptus dominicus
Least Grebe
01-05-15 © J. Simón Tagtachian
Yellow-chinned Spinetail
Certhiaxis cinnamomeus
Yellow-chinned Spinetail
03-05-15 © Sergio Cusano
Great Pampa-Finch
Embernagra platensis
02-05-15 © Cora Rimoldi
Straneck's Tyrannulet
Serpophaga griseicapilla
Straneck's Tyrannulet
03-05-15 © Sergio Cusano
Scarlet-headed Blackbird
Amblyramphus holosericeus
Scarlet-headed Blackbird
03-05-15 © Sergio Cusano
Eared Dove
Zenaida auriculata
Eared Dove
01-05-15 © Sergio Cusano
Brazilian Teal
Amazonetta brasiliensis
Brazilian Teal
01-05-15 © J. Simón Tagtachian
White-tufted Grebe
Rollandia rolland
White-tufted Grebe
03-05-15 © Sergio Cusano