News - June 2016


New bird species
Subtropical Doradito
Pseudocolopteryx acutipennis
Subtropical Doradito
16-11-13 © Claudia y Tito Di Mauro
Subtropical Doradito
01-11-13 © Claudia y Tito Di Mauro
This doradito had been wrongly identified as a Warbling Doradito. Luis Pagano found the mistake and now we present a new species.
The known distribution for this bird does not reach so far to the east. It is found in the northwest and center of Argentina to the northwest of Province of Buenos Aires.

Scrub Blackbird
Dives warszewiczi
Scrub Blackbird
19-06-16 © Román Montero

On the path bordering the Ex-covimet Román found this black bird. Size and voice did not match any of those known to him. He found the information on the site.

Great Egret
Ardea alba
Great Egret
18-06-16 © J. Simón Tagtachian
Great Egret
18-06-16 © J. Simón Tagtachian
Very early in the morning the group found a big group of great egrets in the Coypu Pond. Then they disappeared. Walter tells us that when he leaves at night he can see a big number of great egrets which gather at the Viamonte end. It is striking how the white colour of egrets stands out in the night. They use this place as a roosting site.



salida_20160702_800px


Last Satruday of June, a grey and cold day
The day was ugly from the very start and it did not get better. On two opportunities some sunrays appeared in the sky and were quickly devoured by the clouds. Best to be mentioned: Ringed Kingfisher .Observadores/Birdwatchers

Observadores/Birdwatchers
Only five were present. The ones in the photo and Ariel, the photographer.
Dredge Draga/dredge25 6 16 © J. Simón Tagtachian

Gaviotas/Gulls25 6 16 © J. Simón Tagtachian
This working dredge gathered a huge number of gulls around.
Sailing ship Velero/Sailing ship25 6 16 © J. Simón Tagtachian
The sailing ship illuminated by one of the brief sunrays.

Ringed Kingfisher
Megaceryle torquata
Ringed Kingfisher
25-06-16 © J. Simón Tagtachian
Ringed Kingfisher
25-06-16 © J. Simón Tagtachian
First one flew by very farl and we could not realize what it was. Later we heard it twice and saw it fly by in the Canal Viamonte
Masked Duck
Nomonyx dominicus
Masked Duck
25-06-16 © J. Simón Tagtachian

Seven inidividuals were spotted. Male in eclipse plumage

Rufescent Tiger-Heron
Tigrisoma lineatum
Rufescent Tiger-Heron
25-06-16 © J. Simón Tagtachian
Rufescent Tiger-Heron
25-06-16 © J. Simón Tagtachian
25-06-16 © Cora Rimoldi

When we discovered the juvenile tiger-heron it had already caught this aquatic snake Helicops infrataeniatus. It shook the snake several times but unsuccessfully. The snake was very long and coiled around the bill as they usually do. Unluckily it moved away with the snake and the end of the story remains unknown

Campo Flicker
Colaptes campestris
Campo Flicker
25-06-16 © J. Simón Tagtachian
25-06-16 © Cora Rimoldi

At the entrance of the Viamonte Access we found a field flicker eating ants along with a green-barred woodpecker (not in the video). The we discovered a second flicker at the back. Ah! and a rufous hornero, too!

Great Grebe
Podiceps major
Great Grebe
25-06-16 © J. Simón Tagtachian
Hooded Siskin
Spinus magellanicus
Hooded Siskin
25-06-16 © J. Simón Tagtachian

Some 20 individuals (17 in the photo)

Blue-and-yellow Tanager
Pipraeidea bonariensis
Blue-and-yellow Tanager
25-06-16 © J. Simón Tagtachian

Male eating fruit of bugweed Solanum granulosum-leprosum

Green-winged Saltator
Saltator similis
Green-winged Saltator
25-06-16 © J. Simón Tagtachian
Green-winged Saltator
25-06-16 © J. Simón Tagtachian

Eating fruit of bugweed Solanum granulosum-leprosum

Sayaca Tanager
Thraupis sayaca
Sayaca Tanager
25-06-16 © J. Simón Tagtachian

We saw the Blue-and yellow Tanager, the Green-winged Saltator and the Sayaca Tanager almost together, but the last one was not eating the fruit of the bugweed Solanum granulosum -eprosum.

European Starling
Sturnus vulgaris
European Starling
25-06-16 © J. Simón Tagtachian

European starling (top) shiny cowbird (belos) The bad reputation ranking


Some flowers and fruits
Climbing aloe
Aloe ciliaris
Aloe trepador/Climbing aloe18 6 16 © Sergio Cusano
Exótica
Loquat
Eriobotrya japonica
Níspero/Loquat5 6 16 © Sergio Cusano
White cedar
Melia azedarach
Paraíso/White cedar11 6 16 © Sergio Cusano
Exótica
Giant arrowhead
Sagittaria montevidensis
Sagitaria/Giant arrowhead11 6 16 © Sergio Cusano
Native. In the fountain at Viamonte Access
Blue anise sage
Salvia guaranitica
Salvia azul/Blue anise sage5 6 16 © Sergio Cusano
Native. Flowers still visited by hummingbirds.
Common moth vine
Araujia hortorum
Tasi/Common moth vine4 6 16 © Sergio Cusano
Native



Butterflies and a moth
Banded Longwing
Heliconius erato phyllis
Almendra común/Banded Longwing© J. Simón Tagtachian
Bella Mapwing
Hypanarthia bella
Bellísima común/Bella Mapwing© J. Simón Tagtachian
Mexican Silverspot
Dione moneta
Moneta/Mexican Silverspot© J. Simón Tagtachian

Scordylia quadruplicaria
Scordylia quadruplicaria© Claudia Mon
Monarch
Danaus erippus
Monarca/Monarch© J. Simón Tagtachian
Monarch
Danaus erippus
Monarca/Monarch© J. Simón Tagtachian
Monarch
Danaus erippus
Monarca/Monarch© J. Simón Tagtachian
Monarch
Danaus erippus
Monarca/Monarch© J. Simón Tagtachian



Stripe-backed Bittern
Ixobrychus involucris
Stripe-backed Bittern
18-06-16 © Luis G. Pagano
On the June 18th the day of the survey Lui stayed with his telescope in different places along the coast. At Carlota Roberts Canal he found the stripe-backed bittern (above), a bar-winged cinclodes (below) and two capibaras. They were on the other side of the canal
Buff-winged Cinclodes
18-06-16 © Luis G. Pagano

New species: Colubroidean snake
Helicops leopardinus
Culebra acuática overa/Colubroidean snake14 6 16 © Marcelo Leanes
This snake is typical of the northeast (Corrientes, south of Misiones, Formosa and Chaco) and have arrived during the last floods. It is aggressive but no venemous. Marcelo discovered it at the Meeting Point on top of the dried vegetation on the coast. It was drowsy basking in the sun.
and two other already known snakes
Colubroidean snake
Helicops infrataeniatus
Culebra acuática común/Colubroidean snake18 6 16 © Marcelo Leanes It was at the Meeting Point next to stripe of dried vegetation deposited by the tides.
Urutu pit viper
Bothrops alternatus

18 6 16 © Claudia y Tito Di Mauro
Coypu
Myocastor coypus
Coipo/Coypu

Coipo/Coypu

Coipo/Coypu18 6 16 © J. Simón Tagtachian
Detalle de los dedos de las patas anteriores: cuatro dedos largos y un pulgar muy reducido.
Coipo/Coypu
The tial is long and conical and gets thinner at the tip. It functions like a rudder when it moves in the water.

18 6 16 © Claudia y Tito Di Mauro
Article on White-winged Becard
Pachyramphus polychopterus with abnormal bill (in Spanish)
Anambé FDM nota© Federico De Maio
Clic on phot to read the article written by Federico De Maio on the White-winged Becard in the section Nótulas Faunísticas on the Fundación Azara's website



Catfish
Parapimelodus valenciennis
Porteñito/Catfish11 6 16 © Florencia Fortini

Porteñito/Catfish11 6 16 © Florencia Fortini

Porteñito/Catfish11 6 16 © Florencia Fortini
Florencia captured this rufescent tiger-heron eating this prey. Guillermo explains to us this is a catfish. One can tell by the form of the tail, the broad peduncle, the fins which can been seen more or less and by the silvery colouring.

New bird species
Canary
Serinus canaria
Canary
10-06-16 © J. Simón Tagtachian
Canary
10-06-16 © J. Simón Tagtachian
Canary
10-06-16 © J. Simón Tagtachian
On 10th of June on the Middle Path 100 meters away from the Lizard Path Simón found this bird. His attention was first drawn by the size of the bird and then he realized it was ringed. Lui confirmed its identity.
The canary is one of the commonest cage birds. Its song first made man adopt it as a pet. Then artificial selection altered the colour and the form, there being too many races at present. It was also successfully hibridized with other species of fringillids, the family it belongs to. The wild species it comes from is
Serinus canaria from the Canary and Madeira Islands.

Bird Survey by the COARecs - June 18th 2016
A great day to survey birds. It began a bit chilly but the sun made us warm up. The reserve was very quiet and very few people. We assume it was due to the holiday. The provisional result was 95 species. See what birds were surveyed.
Censo junio 2016/June 2016 Bird survey© J. Simón Tagtachian
The sun rising at 7:25 a.m.
Censo junio 2016/June 2016 Bird survey© Sergio Cusano
25 minutes later....
Censo junio 2016/June 2016 Bird survey© Sergio Cusano

Censo junio 2016/June 2016 Bird survey© Sergio Cusano
By 10 a.m. a cloudless sky and a sun which heated the day.
Censo junio 2016/June 2016 Bird survey© J. Simón Tagtachian
A beautiful moon at about 6 p.m.
Censo junio 2016/June 2016 Bird survey© J. Simón Tagtachian
The group of observers of the morning shift

Birds of the survey
Masked Duck
Nomonyx dominicus
Masked Duck
18-06-16 © Sergio Cusano

Around 11 am.

Masked Duck
18-06-16 © Sergio Cusano

Around 11 am. Male in eclipse plumage

Masked Duck
18-06-16 © Dolores Fernández

Around 2 pm. Male in eclipse plumage

Masked Duck
18-06-16 © Dolores Fernández

Around 2 pm

Masked Duck
18-06-16 © J. Simón Tagtachian

At 6 pm

Masked Duck
18-06-16 © J. Simón Tagtachian

At 6 pm

The masked duck returned after four months of absence. The environment has changed a lot and it is not very favourable for it to remain. A long time ago all the giant arrowheads were removed and then all the water lettuce. There is a clear of water and this duck needs vegetation to hide. Let's see if they stay. There were seven individuals. All in female-like plumage but some with a chestnut colouring, that is they are amles in eclipse plumage.
At 11 a.m. they were inactive with their bills tucked into their back in a resting position. By 2 p.m. they were active and by 6 p.m., bathing.
Fulvous Whistling-Duck
Dendrocygna bicolor
Fulvous Whistling-Duck
18-06-16 © Sergio Cusano

It returned after four months of absence

White-winged Coot
Fulica leucoptera
White-winged Coot
18-06-16 © Sergio Cusano

Very common some months ago. We look for it among all the coots to make sure the species is still present. There is only one individual.

Wattled Jacana
Jacana jacana
Wattled Jacana
18-06-16 © Sergio Cusano

Another bird which has suffered the change of the environment. With the extraction of the water fern only three individuals were counted in all the Coypu Pond. We reached 50 before that.

White-banded Mockingbird
Mimus triurus
White-banded Mockingbird
18-06-16 © J. Simón Tagtachian
White-tipped Plantcutter
Phytotoma rutila
White-tipped Plantcutter
18-06-16 © J. Simón Tagtachian
White-tipped Plantcutter
Phytotoma rutila
White-tipped Plantcutter
18-06-16 © J. Simón Tagtachian
White-crested Tyrannulet
Serpophaga subcristata
White-crested Tyrannulet
18-06-16 © J. Simón Tagtachian

Seen on route 3. Quite impressive the number of white-crested tyrannulets heard on all routes, but no Straneck's tyrannulets at all

White-crested Tyrannulet
18-06-16 © Sergio Cusano

Seen on route 1. Quite impressive the number of white-crested tyrannulets heard on all routes, but no Straneck's tyrannulets at all

Double-collared Seedeater
Sporophila caerulescens
Double-collared Seedeater
18-06-16 © Sergio Cusano

This species migrates to the north. Nevertheless some individuals always stay around. We detected a total of three.

White-tipped Dove
Leptotila verreauxi
White-tipped Dove
18-06-16 © J. Simón Tagtachian

Easier heard than seen this individual was even filmed.

18-06-16 © Claudia y Tito Di Mauro
Great Grebe
Podiceps major
18-06-16 © Claudia y Tito Di Mauro

Carries a fish which does not attempt or want to eat. Perhaps a token?

Yellow-winged Blackbird
Agelasticus thilius
18-06-16 © Claudia y Tito Di Mauro
Campo Flicker
Colaptes campestris
Campo Flicker
18-06-16 © Sergio Cusano
Rufous-sided Crake
Laterallus melanophaius
Rufous-sided Crake
18-06-16 © J. Simón Tagtachian
Variable Oriole
Icterus pyrrhopterus
Variable Oriole
18-06-16 © J. Simón Tagtachian

Eating from camuati wasp nest

Southern Screamer
Chauna torquata
Southern Screamer
18-06-16 © Sergio Cusano
Wren-like Rushbird
Phleocryptes melanops
Wren-like Rushbird
18-06-16 © J. Simón Tagtachian
Blue-and-yellow Tanager
Pipraeidea bonariensis
Blue-and-yellow Tanager
18-06-16 © J. Simón Tagtachian



Censo

Diademed Tanager
Stephanophorus diadematus
Diademed Tanager
15-06-16 © Adrián Grilli
Diademed Tanager
11-06-16 © Jesús Fernández
Great Pampa-Finch
Embernagra platensis
Great Pampa-Finch
15-06-16 © Adrián Grilli
Nenday Parakeet
Aratinga nenday
Nenday Parakeet
15-06-16 © Adrián Grilli

Great grebe displays
Great grebe displays
Great grebe displays
Read more



The table is set
Green-winged Saltator
Saltator similis
Green-winged Saltator
12-06-16 © Claudia Mon

With rufous-collared sparrow

Solitary Black Cacique
Cacicus solitarius
Solitary Black Cacique
12-06-16 © Claudia Mon

With a female white-lined tanager with her back turned and two female shiny cowbirds.

White-lined Tanager
Tachyphonus rufus
White-lined Tanager
12-06-16 © Claudia Mon

With eared dove below left

Shiny Cowbird
Molothrus bonariensis
Shiny Cowbird
12-06-16 © Claudia Mon

Thre male shiny cowbirds, one female shiny cowbird with her back turned and a female white-lined tanager at the back

Unicolored Blackbird
Agelasticus cyanopus
Unicolored Blackbird
12-06-16 © Claudia Mon

Everybody came down to eat with the exception of the blackbird



White-crested Tyrannulet
Serpophaga subcristata
White-crested Tyrannulet
12-06-16 © Claudia Mon
Mallard Duck
Anas platyrhynchos
Mallard Duck
12-06-16 © Claudia Mon

Mallard duck and red-fronted coot on the right



Hoary bat
Lasiurus cinereus
Murciélago escarchado/Hoary bat

Murciélago escarchado/Hoary bat

Murciélago escarchado/Hoary bat25 5 16 © J. Simón Tagtachian
On 25th of May at plain daylight we saw a brown bat fly five times at 3 meters above our heads. It then flew above the river and drank water.

Southern Beardless-Tyrannulet
Camptostoma obsoletum
Southern Beardless-Tyrannulet
11-06-16 © Hernán Tolosa
Chilean Swallow
Tachycineta meyeni
Chilean Swallow
11-06-16 © Hernán Tolosa
Grey-throated Warbling-Finch
Poospiza cabanisi
Grey-throated Warbling-Finch
11-06-16 © Hernán Tolosa

Camuati wasp nest: a food resource
The abandoned camuati wasp nests are a nutritious source of food for birds. Rests of honey produced by the wasps remain and certainly insects that are also attracted to them.
White-lined Tanager
Tachyphonus rufus
White-lined Tanager
11-06-16 © Hernán Tolosa
Hernán tells us that a white-lined tanager took part in a small flock of 6 or 7 variable orioles. Everybody ate from a camuati wasp nest which was in the Lizard Path and from another one which is seen from the viewpoint nearest to the Visitors' Center. They visited both
Variable Oriole
Icterus pyrrhopterus
Variable Oriole
11-06-16 © Hernán Tolosa



Yellow-browed Tyrant
Satrapa icterophrys
Yellow-browed Tyrant
11-06-16 © Hernán Tolosa
Sayaca Tanager
Thraupis sayaca
Sayaca Tanager
11-06-16 © Hernán Tolosa
Hepatic Tanager
Piranga flava
12-06-16 © Cora Rimoldi
Before eating the loquat this female made herself heard.

12 6 16 © Cora Rimoldi
Grey-throated Warbling-Finch
Poospiza cabanisi
Grey-throated Warbling-Finch
11-06-16 © Sergio Cusano

Gilded Hummingbird
Hylocharis chrysura
12-06-16 © Cora Rimoldi

At this time of the year few flowers may be seen in the reserve. One of them is the blue anise sage Salvia guaranitica, a native plant. and the hummingbird does not miss out the chance

Grey-throated Warbling-Finch
Poospiza cabanisi
Grey-throated Warbling-Finch
11-06-16 © Sergio Cusano
Grey-throated Warbling-Finch
11-06-16 © Sergio Cusano
Grey-throated Warbling-Finch
11-06-16 © Sergio Cusano
Green-winged Saltator
Saltator similis
Green-winged Saltator
11-06-16 © Sergio Cusano
Tropical Parula
Setophaga pitiayumi
Tropical Parula
11-06-16 © Sergio Cusano
White-lined Tanager
Tachyphonus rufus
White-lined Tanager
11-06-16 © Sergio Cusano
White-lined Tanager
11-06-16 © Sergio Cusano

New viewpoint Nuevo mirador/New viewpoint11 6 16 © Sergio Cusano
It is still closed. The grass is growing.
The reserve early in the morning Calle exterior/Sidewalk11 6 16 © Sergio Cusano

Calle exterior/Sidewalk11 6 16 © Sergio Cusano



Maguari Stork
Ciconia maguari
Maguari Stork
10-06-16 © J. Simón Tagtachian
Maguari Stork
10-06-16 © J. Simón Tagtachian
Cocoi Heron
Ardea cocoi
Cocoi Heron
10-06-16 © J. Simón Tagtachian
Roadside Hawk
Rupornis magnirostris
Roadside Hawk
10-06-16 © J. Simón Tagtachian



The RECS has turned 30
A nice day to celebrate and so we did with the presence of many birds, especially two winter visitors which arrived and stayed: the Dark-faced Ground-Tyrant and the Mourning Sierra-Finch. As a present the reserva seen from above by Victoria Mansilla.
Aerial view Vista aéra/Aerial view28 4 16 © Victoria Mansilla

Vista aéra/Aerial view28 4 16 © Victoria Mansilla

Vista aéra/Aerial view28 4 16 © Victoria Mansilla

Vista aéra/Aerial view28 4 16 © Victoria Mansilla

Dark-faced Ground-Tyrant
Muscisaxicola maclovianus
Dark-faced Ground-Tyrant
05-06-16 © Silvia Vitale
Dark-faced Ground-Tyrant
05-06-16 © Sergio Cusano
Mourning Sierra-Finch
Phrygilus fruticeti
Mourning Sierra-Finch
05-06-16 © Silvia Vitale
Mourning Sierra-Finch
05-06-16 © Sergio Cusano

Eating with a group of rufous-collared sparrow in the recreation area at the Meeting Point

Hooded Siskin
Spinus magellanicus
Hooded Siskin
05-06-16 © Silvia Vitale
Yellow-chinned Spinetail
Certhiaxis cinnamomeus
Yellow-chinned Spinetail
05-06-16 © Sergio Cusano
Double-collared Seedeater
Sporophila caerulescens
Double-collared Seedeater
05-06-16 © Silvia Vitale
Variable Oriole
Icterus pyrrhopterus
Variable Oriole
05-06-16 © Silvia Vitale
Great Kiskadee
Pitangus sulphuratus
Great Kiskadee
05-06-16 © Sergio Cusano
Monk Parakeet
Myiopsitta monachus
Monk Parakeet
05-06-16 © Sergio Cusano

Eating a caracú bone

Cattle Tyrant
Machetornis rixosa
Cattle Tyrant
05-06-16 © Sergio Cusano

A rainy Saturday and the RECS closed
There were only two brave assistants to the bird walk, Simón and Sergio. They walked there and back twice along the sidewalk and found 49 species. Photos were taken with the FAPP system (photos assisted by umbrellas). We share some
New viewpoint Nuevo mirador/New viewpoint4 6 16 © Sergio Cusano
View of Coypu Pond Vista Coipos/View Coypu Pond

Vista Coipos/View Coypu Pond4 6 16 © Sergio Cusano

Chalk-browed Mockingbird
Mimus saturninus
Chalk-browed Mockingbird
04-06-16 © Sergio Cusano
White-tufted Grebe
Rollandia rolland
White-tufted Grebe
04-06-16 © Sergio Cusano

It is not common to see the white-tufted grebe in the alternate plumage at this time of the year. Simón and Sergio say they were building a nest.

White-tufted Grebe
04-06-16 © Sergio Cusano

It is not common to see the white-tufted grebe in the alternate plumage at this time of the year. Simón and Sergio say they were building a nest.

Lake Duck
Oxyura vittata
Lake Duck
04-06-16 © Sergio Cusano
White-tipped Dove
Leptotila verreauxi
White-tipped Dove
04-06-16 © Sergio Cusano
Great Grebe
Podiceps major
Great Grebe
04-06-16 © Sergio Cusano
Plumbeous Rail
Pardirallus sanguinolentus
Plumbeous Rail
04-06-16 © Sergio Cusano
Rosy-billed Pochard
Netta peposaca
Rosy-billed Pochard
04-06-16 © Sergio Cusano
Unicolored Blackbird
Agelasticus cyanopus
Unicolored Blackbird
04-06-16 © Sergio Cusano

They saw 4 or 5 male unicoloured blackbirds



Grey-throated Warbling-Finch
Poospiza cabanisi
Grey-throated Warbling-Finch
03-06-16 © Claudia Mon
Grey-throated Warbling-Finch
03-06-16 © Claudia Mon
Mourning Sierra-Finch
Phrygilus fruticeti
Mourning Sierra-Finch
03-06-16 © Claudia Mon
Mourning Sierra-Finch
03-06-16 © Claudia Mon

With golden-billed saltator on the right

Mourning Sierra-Finch
03-06-16 © Claudia Mon

With rufous-collared sparrow behind

Yellow-chinned Spinetail
Certhiaxis cinnamomeus
Yellow-chinned Spinetail
03-06-16 © Victoria Mansilla
Wren-like Rushbird
Phleocryptes melanops
Wren-like Rushbird
03-06-16 © Victoria Mansilla
Rufous-sided Crake
Laterallus melanophaius
Rufous-sided Crake
03-06-16 © Victoria Mansilla
Sayaca Tanager
Thraupis sayaca
Sayaca Tanager
03-06-16 © Claudia Mon

Eating fruit of Chinese privet Ligustrum lucidum


Face to face
Subtitle
Sooty-fronted Spinetail
Synallaxis frontalis
Sooty-fronted Spinetail
03-06-16 © José Alberto Lell
Narrow-billed Woodcreeper
Lepidocolaptes angustirostris
Narrow-billed Woodcreeper
03-06-16 © José Alberto Lell
Yellow-billed Cardinal
Paroaria capitata
Yellow-billed Cardinal
03-06-16 © Claudia Mon



Great Pampa-Finch
Embernagra platensis
Great Pampa-Finch
03-06-16 © Claudia Mon
Great Pampa-Finch
03-06-16 © Claudia Mon
Double-collared Seedeater
Sporophila caerulescens
Double-collared Seedeater
03-06-16 © José Alberto Lell
Ultramarine Grosbeak
Cyanoloxia brissonii
Ultramarine Grosbeak
03-06-16 © Claudia Mon
Kelp Gull
Larus dominicanus
Kelp Gull
03-06-16 © Claudia Mon

Adult and juvenile

Brown-hooded Gull
Chroicocephalus maculipennis
Brown-hooded Gull
03-06-16 © Claudia Mon
White-crested Tyrannulet
Serpophaga subcristata
White-crested Tyrannulet
03-06-16 © Claudia Mon
Golden-crowned Warbler
Basileuterus culicivorus
Golden-crowned Warbler
03-06-16 © José Alberto Lell