| Urutu Pit Viper Bothrops alternatus © Marcelo Gavensky |
| Red-eyed Vireo Vireo olivaceus  Another summer vistior© Pablo Serur |
Harris’s Hawk Parabuteo unicinctus  © Fernando Prado |
| New bird species: Green-backed Becard Pachyramphus viridis |
 Female. Seen on the Middle Path 50 metres far from the coast© Pablo Serur |
| Ash-colored Cuckoo Coccyzus cinereus  © Pablo Serur |
Bran-colored Flycatcher Myiophobus fasciatus  © Pablo Serur |
| Streaked Flycatcher Myiodynastes maculatus  Another summer visitor arrived© C. y D. Bastías |
European Starling Sturnus vulgaris  Atypical© C. y D. Bastías |
| Grayish Baywing Agelaioides badius  © Carlos Gonzalez Ledo |
Whistling Heron Syrigma sibilatrix  © C. y D. Bastías |
| White-tipped Plantcutter Phytotoma rutila  Female© Fernando Prado |
Golden-billed Saltator Saltator aurantiirostris  Incomplete black ring around buff throat© Carlos Gonzalez Ledo |
| Rufescent Tiger-Heron Tigrisoma lineatum |
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 10-10-11© Carlos Gonzalez L. |
 15-10-11© C. y T. Di Mauro |
 17-10-11© Carlos Gonzalez L. |
| Fork-tailed Flycatcher Tyrannus savana  Another summer visitor has arrived at Costanera© C. y T. Di Mauro |
White-barred Piculet Picumnus cirratus  The female is always spotted. Is there a male?© C. y D. Bastías |
| Feeding on the wing | |
| Gray-breasted Martin Progne chalybea  © Fernando Prado |
Great Kiskadee Pitangus sulphuratus  © Carlos Gonzalez Ledo |
| Two birds representative of two families which feed in flight The Gray-breasted Martin (Family Hirundinidae) and the Great Kiskadee (Family Tyrannidae) catch insects in flight but show behavioural and morphological differences. The Great Kiskadee sits still on a perch till it sees the prey, flies out to catch it and flies back to the same or a nearby place to eat it. Its bill is strong and has a hooked tip. Swallows feed on the wing. They are moving and so are insects, so a huge mouth is more appropriate to engulf preys. Their bills are short, broad and gape widely. |
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| Green-barred Woodpecker Colaptes melanochloros  Building a nest© C. y D. Bastías |
Scarlet-headed Blackbird Amblyramphus holosericeus  © J. Simón Tagtachian |
| Southern Caracara Caracara plancus  With a rat© C. y D. Bastías |
Ultramarine Grosbeak Cyanocompsa brissonii  Eating Morus alba‘s fruit© Fernando Prado |
| Glittering-bellied Emerald Chlorostilbon aureoventris  Male© C. y T. Di Mauro |
Sooty-fronted Spinetail Synallaxis frontalis  © Carlos Gonzalez Ledo |
| Southern Caracara Caracara plancus |
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| Photos by José Luis Merlo A typical scene during the breeding season. The Southern Caracara, a very terrestrial raptor, chooses material for the nest. It pulls the piece, tears it off and curls it to carry it more easily. With the branch held tightly in the bill it takes off and flies straight to the nest. |
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| Tropical Kingbird Tyrannus melancholicus  The first to arrive© J. Simón Tagtachian |
Small-billed Elaenia Elaenia parvirostris  © Pablo Serur |
| White-banded Mockingbird Mimus triurus  Rarely seen at this time of the year© J. Simón Tagtachian |
Sayaca Tanager Thraupis sayaca  © J. Simón Tagtachian |
| Glaucous-blue Grosbeak Cyanoloxia glaucocaerulea |
 This is a last year’s photo, but it is worth adding it to the list.© Pablo Serur |
| Ringed Kingfisher Megaceryle torquata |
 It is true this male is flying away but we hope it will come back soon© Pablo Serur |
| Long-winged Harrier Circus buffoni |
 Adult (Dark Morph)© Pablo Serur |
| Chotoy Spinetail Schoeniophylax prhyganophilus |
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 More photos of the Chotoy Spinetail© C. y D. Bastías |
 which seems to be staying with us for a while© C. y D. Bastías |
| Rufous-sided Crake Laterallus melanophaius  © Carlos Gonzalez Ledo |
Masked Yellowthroat Geothlypis aequinoctialis  Male© J. Simón Tagtachian |
| Great Pampa-Finch Embernagra platensis  © J. Simón Tagtachian |
Yellow-browed Tyrant Satrapa icterophrys  © J. Simón Tagtachian |
| Yellow-winged Blackbird Agelasticus thilius |
 At Coipos a flock of many individuals.In the photo: Top, an adult male and a juvenile male, bottom, a female © Carlos Gonzalez Ledo |
| Vermilion Flycatcher Pyrocephalus rubinus  Male© Fernando Prado |
Long-winged Harrier Circus buffoni  Female (Light Morph)9-11 © Carlos Gonzalez Ledo |
| White-faced Ibis Plegadis chihi  In V formation9-11 © Carlos Gonzalez Ledo |
Maguari Stork Ciconia maguari  A group of more than forty individuals was seen moving in south-north direction9-11 © Carlos Gonzalez Ledo |
| Chotoy Spinetail Schoeniophylax phryganophilus © Roberto Ares |
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