News - May 2017

May 08, 2017 00:13

Collared Plover

Charadrius collaris

31-05-17 © J. Simón Tagtachian

We had already said that the environment of the Duck Pond was ideal for wintering plovers. However since it is so far search must be patient and exhaustive. It is small and its brown colour blends it in the environment. Its little runs help detect it.
It is not the only one we are waiting for. the dotterel also vistied the reserve in winter. Both share this picture of 2006, which coincidentally is 31st of May.

31-05-06 © Roberto Ares

At that time they moved at the edge of the pond very near the roads

Other winter birds to look for
On the list of Winter birds appear all the birds related to the winter time which have been photographed. Germán Pugnali prepared another list, where most of them are old records with no documented support. Besides, he adds some which were not spotted in the reserve, but in the surroundings, which become potential birds.

Chloephaga spp Any species of this genus!

Spheniscus magellanicus Magellanic penguin: old record with photos

Buteo polyosoma Variable hawk: without photos

Procellaria aequinoctialis White chinned petrel: without photos

Haematopus palliatus American oystercatcher: nests in beaches farther south

Oreopholus ruficollis Tawny-throated dotterel: migrates regularly to nearby fields

Pluvianellus socialis Magellanic plover: migrates sporadically to the south of the Buenos Aires Province.

Charadrius falklandicus Two-banded plover: without photos

Thalasseus sandvicensis Sandwich tern: without photos

Chionis alba Snowy sheathbill: recorded in 2016 at the Fishermen's Club in front of Aeroparque

Stercorarius chilensis Chilean skua: recorded with far away photos

Stercorarius antarcticus Brown skua: regular in beaches farther south

Bubo virginianus Great horned owl: hearing record, breeding and regular at Palermo

Patagona gigas Giant hummingbird: Hypothetical, without photos

Upucerthia dumetaria Scale-throated earthcreeper: winter records in nearby areas

Geositta cunicularia Common miner: old record, without photos

Asthenes baeri Short-billed canastero: old record, without photos.

Asthenes hudsoni Hudson's canastero: old record, without photos

Stigmatura budytoides Greater wagtail-tyrant: winter records in nearby areas.

Agriornis murinus Lesser Shrike-tyrant: old record, without photos.

Xolmis rubetra Rusty-backed monjita: old record, without photos.

Neoxolmis rufiventris Chocolate-vented monjita: migrates regularly to nearby fields

Mimus patagonicus Patagonian mockingbird: old record, without photos.

Tangara preciosa Chestnut-backed tanager: Like other thraupids, it migrates along the gallery forest and is regular in Uruguay.

Mottle-cheeked Tyrannulet

Phylloscartes ventralis

31-05-17 © J. Simón Tagtachian

White-tipped Plantcutter

Phytotoma rutila

31-05-17 © J. Simón Tagtachian

Grey-throated Warbling-Finch

Poospiza cabanisi

30-05-17 © J. Simón Tagtachian

White-tipped Dove

Leptotila verreauxi

31-05-17 © J. Simón Tagtachian

Rufous underwing coverts

Hepatic Tanager

Piranga flava

27-05-17 © J. Simón Tagtachian

27-05-17 © Javier Guillermo González

Snowy-crowned Tern

Sterna trudeaui

27-05-17 © Elsa y Guillermo Marcaida

27-05-17 © J. Simón Tagtachian

American Kestrel

Falco sparverius

27-05-17 © Javier Guillermo González

27-05-17 © J. Simón Tagtachian

Rufous-browed Peppershrike

Cyclarhis gujanensis

27-05-17 © Elsa y Guillermo Marcaida

27-05-17 © Javier Guillermo González

Green Kingfisher

Chloroceryle americana

27-05-17 © Javier Guillermo González

27-05-17 © Elsa y Guillermo Marcaida

Blue-and-yellow Tanager

Pipraeidea bonariensis

27-05-17 © Javier Guillermo González

Sooty-fronted Spinetail

Synallaxis frontalis

27-05-17 © Javier Guillermo González

Plants, flowers and fruits
Blue anise sage *Salvia guaranitica*© J. Simón Tagtachian	Striped rosemallow *Hibiscus cisplatinus*© J. Simón Tagtachian
Roman Cassie *Acacia caven*© J. Simón Tagtachian	Spiderwort *Tripogandra diuretica*© J. Simón Tagtachian
Ball moss *Tillandsia recurvata*© J. Simón Tagtachian	Muehlenbeckia sagittifolia *Muehlenbeckia sagittifolia*© J. Simón Tagtachian
Cockspur tree *Erithryna crista-galli*© J. Simón Tagtachian	Louisiana canna *Canna glauca*© J. Simón Tagtachian
Silk floss tree *Chorisia speciosa*© J. Simón Tagtachian	Calico flower *Aristolochia elegans*© RAP
Indian shot *Canna indica*© J. Simón Tagtachian	Busy Lizzy *Impatiens walleriana*© J. Simón Tagtachian
Honey locust *Gleditsia triacanthos*© Cora Rimoldi	Castor bean *Ricino communis*© Victoria Mansilla

Two fungii

1-4-17 © Victoria Mansilla

2-4-17 © Carlos González Ledo

4-4-17 © Nicolás Giorgio

Rufous Hornero

Furnarius rufus

26-05-17 © J. Simón Tagtachian

Yellow-browed Tyrant

Satrapa icterophrys

26-05-17 © J. Simón Tagtachian

Grayish Saltator

Saltator coerulescens

26-05-17 © J. Simón Tagtachian

With fruit of bugweed Solanum granulosum-leprosum

Scarlet-headed Blackbird

Amblyramphus holosericeus

24-05-17 © J. Simón Tagtachian

Four on the wing

Plumbeous Rail

Pardirallus sanguinolentus

24-05-17 © J. Simón Tagtachian

Black-necked Swan

Cygnus melancoryphus

24-05-17 © Nicolás Giorgio

Along with 2 coscoroba swans in the Duck Pond

Great Grebe

Podiceps major

24-05-17 © J. Simón Tagtachian

Blue-and-yellow Tanager

Pipraeidea bonariensis

24-05-17 © J. Simón Tagtachian

Sayaca Tanager

Thraupis sayaca

24-05-17 © J. Simón Tagtachian

Double-collared Seedeater

Sporophila caerulescens

24-05-17 © J. Simón Tagtachian

Ultramarine Grosbeak

Cyanoloxia brissonii

23-05-17 © J. Simón Tagtachian

Coscoroba Swan

Coscoroba coscoroba

23-05-17 © Nicolás Giorgio

Pair in the Duck Pond

Yellow-winged Blackbird

Agelasticus thilius

23-05-17 © J. Simón Tagtachian

Yellow-billed Teal

Anas flavirostris

23-05-17 © J. Simón Tagtachian

Descending on water. To lose speed it changes to an upright position, fans the tail, flaps backwards and places the feet forwards for the impact

Rufescent Tiger-Heron eating an Helicops?

Rufescent Tiger-Heron eating a snake

Fulvous Whistling-Duck

Dendrocygna bicolor

20-05-17 © J. Simón Tagtachian

After more than a month only one individual showed. This year in 21 weeks there are only 4 records.

Roadside Hawk

Rupornis magnirostris

20-05-17 © J. Simón Tagtachian

Shiny Cowbird

Molothrus bonariensis

20-05-17 © J. Simón Tagtachian

All males

Blue-and-white Swallow

Pygochelidon cyanoleuca

16-05-17 © Ricardo Palonsky

Yellow-winged Blackbird

Agelasticus thilius

16-05-17 © Ricardo Palonsky

Southern Caracara

Caracara plancus

16-05-17 © Ricardo Palonsky

Black-necked Swan

Cygnus melancoryphus

16-05-17 © Ricardo Palonsky

Tropical Parula

Setophaga pitiayumi

16-05-17 © Ricardo Palonsky

Black-capped Warbling-Finch

Poospiza melanoleuca

16-05-17 © Ricardo Palonsky

Red-crested Cardinal

Paroaria coronata

16-05-17 © Ricardo Palonsky

Guira Cuckoo

Guira guira

16-05-17 © Ricardo Palonsky

With a nutritious grasshopper

Common Gallinule

Gallinula galeata

13-05-17 © Ricardo Palonsky

Pied-billed Grebe

Podilymbus podiceps

13-05-17 © Ricardo Palonsky

Great Grebe

Podiceps major

13-05-17 © Ricardo Palonsky

Southern Screamer

Chauna torquata

13-05-17 © Ricardo Palonsky

Limpkin

Aramus guarauna

13-05-17 © Ricardo Palonsky

Neotropic Cormorant

Phalacrocorax brasilianus

13-05-17 © Ricardo Palonsky

Unicolored Blackbird

Agelasticus cyanopus

13-05-17 © Ricardo Palonsky

Insects and spiders

Cucurbit beetle

Diabrotica speciosa

29-03-17 © Ricardo Palonsky

Carpenter bee

Xylocopa augusti

29-04-17 © Ricardo Palonsky

Large crane fly

Tipula sp.

07-05-17 © Sergio Cusano

Treehopper

Cyphonia sp

29-04-17 © Pablo Serur

Hoverfly

Palpada sp

17-05-17 © Victoria Mansilla

Ghost spider

Arachosia praesignis

06-05-17 © Pablo Serur

Silver argiope

Argiope argentata

20-05-17 © Sergio Cusano

Rock Pigeon

Columba livia

20-05-17 © Sergio Cusano

Great Grebe

Podiceps major

20-05-17 © Sergio Cusano

Great Egret

Ardea alba

20-05-17 © Sergio Cusano

Rosy-billed Pochard

Netta peposaca

20-05-17 © Sergio Cusano

Chalk-browed Mockingbird

Mimus saturninus

20-05-17 © Sergio Cusano

The Coypu Pond

20-5-17 © Sergio Cusano
Unlike previous Saturdays when the floating vegetation covered practically all the pond, today it was clear from Viamonte to the pergola.

To the rhythm of the laurentia emperors

Pair of laurentia emperors fluttering around the bushes

Laurentia Emperor

Doxocopa laurentia laurentia

17-05-17 © Ricardo Palonsky

A close-up of the proboscis. The two tubes are placed in such a way that they form a feeding canal through which nectar is lapped up. When not feeding the proboscis is curled up.

The Gull Pond

17-5-17 © Eduardo Ibarra
General view of the Gull Pond. Too much water and los of coypus help keep vegetation sparse

17-5-17 © Eduardo Ibarra
1

17-5-17 © Eduardo Ibarra
2

17-5-17 © Eduardo Ibarra
3

17-5-17 © Eduardo Ibarra
4

White-tailed Kite

Elanus leucurus

10-05-17 © Ricardo Palonsky

Kelp Gull

Larus dominicanus

10-05-17 © Ricardo Palonsky

Tropical Parula

Setophaga pitiayumi

10-05-17 © Ricardo Palonsky

Guira Cuckoo

Guira guira

10-05-17 © Ricardo Palonsky

Cold weather begins and guira cuckoos open the blinds to capture more sun

Blue-and-yellow Tanager

Pipraeidea bonariensis

10-05-17 © Ricardo Palonsky

Great Kiskadee

Pitangus sulphuratus

10-05-17 © Ricardo Palonsky

Nenday Parakeet

Aratinga nenday

10-05-17 ©

17-05-17 ©

The toe disposition is zygodactyl - two toes are oriented to the front and the other two backwards. So he can grasp firmly and manipulate the food as if it were a hand. With a fruit of white cedar Melia azederach

Hooded Siskin

Spinus magellanicus

10-05-17 © Ricardo Palonsky

Variable Oriole

Icterus pyrrhopterus

10-05-17 © Ricardo Palonsky

Monk Parakeet

Myiopsitta monachus

10-05-17 © Ricardo Palonsky

With a bunch of Chinese privet fruits

Greyish Baywing

Agelaioides badius

10-05-17 © Ricardo Palonsky

Rufous-bellied Thrush

Turdus rufiventris

10-05-17 © Ricardo Palonsky

Green-barred Woodpecker

Colaptes melanochloros

10-05-17 © Ricardo Palonsky

Insects in trees decrease in number so time to dip the bill in the ground to look for ants

Gilded Hummingbird

Hylocharis chrysura

10-05-17 © Ricardo Palonsky

One of the few plants still with flowers which provide food to the gilded hummingbird

Number eighty

Diaethria candrena candrena

17-05-17 © Victoria Mansilla

Syma sister

Adelpha syma

04-05-17 © José Alberto Lell

Banded longwing

Heliconius erato phyllis

17-05-17 © Victoria Mansilla

Common white-milk

Tatochila autodice

06-05-17 © Ricardo Palonsky

Ithra crescent

Ortilia ithra

17-05-17 © Victoria Mansilla

06-05-17 © Ricardo Palonsky

Bella mapwing

Hypanartia bella

17-05-17 © Victoria Mansilla

Julia

Dryas iulia alcionea

06-05-17 © Ricardo Palonsky

17-05-17 © Victoria Mansilla

Gulf fritillary

Agraulis vanillae maculosa

17-05-17 © Victoria Mansilla

Southern buckeye

Junonia genoveva hilaris

17-05-17 © Victoria Mansilla

Southern Monarch

Danaus erippus

17-05-17 © Victoria Mansilla

06-05-17 © Ricardo Palonsky

Mexican silverspot

Dione moneta

17-05-17 © Victoria Mansilla

Tiger moth

Dysschema sacrifica

07-05-17 © Sergio Cusano

Diademed Tanager

Stephanophorus diadematus

06-05-17 © Ricardo Palonsky

Ringed Kingfisher

Megaceryle torquata

06-05-17 © Ricardo Palonsky

Buff-winged Cinclodes

Cinclodes fuscus

06-05-17 © Ricardo Palonsky

Freckle-breasted Thornbird

Phacellodomus striaticollis

06-05-17 © Ricardo Palonsky

Yellow-browed Tyrant

Satrapa icterophrys

06-05-17 © Ricardo Palonsky

Kelp Gull

Larus dominicanus

06-05-17 © Ricardo Palonsky

Double-collared Seedeater

Sporophila caerulescens

06-05-17 © Ricardo Palonsky

Sooty-fronted Spinetail

Synallaxis frontalis

06-05-17 © Ricardo Palonsky

Two grebes

Pied-billed Grebe

Podilymbus podiceps

06-05-17 © Ricardo Palonsky

Both grebes are losing the nuptial plumage. Their throats are no longer black. The pied-billed grebe's bill stripe is vanishing and the eyering not visible. The white-tufted grebe is coming back to its brownish colouring

White-tufted Grebe

Rollandia rolland

06-05-17 © Ricardo Palonsky

Brazilian Teal

Amazonetta brasiliensis

06-05-17 © Ricardo Palonsky

A magnificent speculum

Ringed Teal

Callonetta leucophrys

06-05-17 © Ricardo Palonsky

Hooded Siskin

Spinus magellanicus

06-05-17 © Ricardo Palonsky

Solitary Black Cacique

Cacicus solitarius

06-05-17 © Ricardo Palonsky

Black-and-rufous Warbling-Finch

Poospiza nigrorufa

06-05-17 © Ricardo Palonsky

Roadside Hawk

Rupornis magnirostris

06-05-17 © Ricardo Palonsky

Red-fronted Coot

Fulica rufifrons

06-05-17 © Ricardo Palonsky

Masked Gnatcatcher

Polioptila dumicola

06-05-17 © Ricardo Palonsky

White-faced Whistling-Duck

Dendrocygna viduata

06-05-17 © Ricardo Palonsky

Beautiful moon

6-5-17 © RAP

Austral Negrito

Lessonia rufa

14-05-17 © Cora Rimoldi

We were amazed to see no more than the floating vegetation from the new viewpoint. Not even a duck, nor a jacana. Nothing. We waited for a while and this negrito appeared. It stayed a bit.

Black-necked Stilt

Himantopus mexicanus

14-05-17 © Cora Rimoldi

Two black-backed stilts flew above us and we supposed they land in the Gull Pond. We were right. Very far, but in the pond they were.

Black-capped Warbling-Finch

Poospiza melanoleuca

Female at Aloysia gratissima

Sooty-fronted Spinetail

Synallaxis frontalis

Red-crested Cardinal

Paroaria coronata

Spix's spinetial
Synallaxis spixi

Amazon kingfisher fishing

Male Amazon kingfisher diving for a fish

Global Big Day
The reserve was closed. We walked along the outer sidewalk. Basically waterbirds were seen

Great Grebe

Podiceps major

Gray-necked Wood-Rail

Aramides cajaneus

Unicolored Blackbird

Agelasticus cyanopus

Rufescent Tiger-Heron

Tigrisoma lineatum

Eating a chameleon cichlid Australoherus facetus

Narrow-billed Woodcreeper

Lepidocolaptes angustirostris

Rock Pigeon

Columba livia

Black-necked Swan

Cygnus melancoryphus

Variable Oriole

Icterus pyrrhopterus

Inscribirse en www.coarecs.com.ar

Recent taxonomic changes

As phylogenetic studies improve the taxonomic board is being reordered. In October 2016 the SACC passed the proposal 723 which introduced significant changes in the location of orders. Taking into account only the families represented in the reserve the most striking move is the Order Columbiformes being placed rather ahead on the list following the Podicipediformes due to the close relation with this order. At the same time the orders Cuculiformes, Caprimulgiformes and Apodiformes follow Columbiformes due to the close relation with this order. Present order: Anseriformes, Galliformes, Phoenicopteriformes, Podicipediformes, Columbiformes, Cuculiformes, Caprimulgiformes, Apodiformes, Gruiformes, Charadriiformes, Sphenisciformes, Ciconiiformes, Suliformes, Pelecaniformes, Cathartiformes, Accipitriformes, Strigiformes, Coraciiformes, Piciformes, Falconiformes, Psittaciformes, Passeriformes. Orden anterior: Anseriformes, Galliformes, Podicipediformes, Phoenicopteriformes, Sphenisciformes, Ciconiiformes, Suliformes, Pelecaniformes, Cathartiformes, Accipitriformes, Gruiformes, Charadriiformes, Columbiformes, Cuculiformes, Strigiformes, Caprimulgiformes, Apodiformes, Coraciiformes, Piciformes, Falconiformes, Psittaciformes, Passeriformes.

The family Thraupidae also had a reordering of species, changes in scientific names, besides the inclusion of the saltators, which had been removed from the family Cardinalidae and placed in Insertae sedis till the correct family was assigned. On this site saltators stayed in the family Cardinalidae). All these changes can be appreciated in the Cast. They are not the last only the most recent.

Views of the ponds and night photos

Cocoi Heron in Coypu Pond at dusk

Great Egret in Coypu Pond at dusk

Ringed Kingfisher

Megaceryle torquata

Buff-winged Cinclodes

Cinclodes fuscus

Ringed Teal

Callonetta leucophrys

Preening and exposing the speculum

It has been missing in the Coypu Pond since more than a month. The last record is in the Gull Pond and was detected by chance when enlarging a photo.

Wattled Jacana

Jacana jacana

Floating vetegation is ideal for jacanas. They move about pecking incessantly. But here everybody is on the wing

Black-capped Warbling-Finch

Poospiza melanoleuca

Tiger moth

Dysschema sacrifica

Southern Lapwing

Vanellus chilensis

Blue-and-yellow Tanager

Pipraeidea bonariensis

Nenday Parakeet

Aratinga nenday

Autumn in the Lizard Path

Otoño en eLagartos/Autumn along Lizard Path

Burrowing Parakeet

Cyanoliseus patagonus

This parrot was abandoned by a woman in the Middle Path. The Center was informed about the animal. This woman had cared for the parrot till its feather grew but could no longer have it with her.

Ringed Kingfisher

Megaceryle torquata

Vermilion Flycatcher

Pyrocephalus rubinus

Buff-winged Cinclodes

Cinclodes fuscus

Straneck's Tyrannulet

Serpophaga griseicapilla

Tropical Parula

Setophaga pitiayumi

Sooty-fronted Spinetail

Synallaxis frontalis

Cocoi Heron

Ardea cocoi

White-tufted Grebe

Rollandia rolland

Pied-billed Grebe

Podilymbus podiceps

Southern Screamer

Chauna torquata

Masked Gnatcatcher

Polioptila dumicola

Black-capped Warbling-Finch

Poospiza melanoleuca

There were five Poopiza species: P. ornata Cinnamon Warbling-Finch, P. nigrorufa Blakc-and-rufous Warbling-Finch, P. cabanisi Grey-breasted Warbling-Finch, P. torquata Ringed Warbling-Finch and P. melanoleuca Black-capped Warbling-Finch. Phylogenetic studies have determined that this group is polyphyletic, that is they have not evolved from the same common ancestor. So they have been separated. The first two have remained in the genus Poospiza and the last three have been changed to genus Microspingus: Microspingus cabanisi, Microspingus torquatus and Microspingus melanoleucus..