You could be forgiven for thinking that I only ever post about birds from Costanera Sur in Buenos Aires. The Guira Cuckoo will make an even dozen galleries from the reserve, but I surprise myself that it has taken this long.

EZE 30Nov12 Guira Cuckoo 01

They are common and confiding birds that form small flocks and roost together in a cuckoo knot. The birds that frequent the promenade at Costanera Sur are especially bold and will even try to stare a birdwatcher down rather than give way at the parilla (pop-up café).

EZE 30Nov12 Guira Cuckoo 02

They undulate back and forth between the reed beds and the light woodland on the reserve and the wall that lines the promenade. The promenade has been marooned half a kilometre inland after land reclamation created the wetland on the banks of the Rio Plata. The wall provides a convenient place to tick-bathe. The birds raise the feathers on their backs to allow the UV rays to penetrate to the skin. This deters parasites and must just feel good.EZE 09May16 Guira Cuckoo 05

Though they disperse a little during the day, the cuckoos form up again during the late afternoon as the sun comes inland and lights the Laguna de los Copios to the east of the promenade.

EZE 18May11 Guira Cuckoo 04

This is when the Guira Cuckoo looks its best. It can look scruffy and drab in poor conditions, but the evening sun shows up the subtle colour variations and catches details that are otherwise easily missed.

EZE 30Nov12 Guira Cuckoo 06

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Written by Redgannet
Redgannet has been working for over 33 years as a crew member/flight attendant and enjoys the well-ventilated air of the outdoors. The nom de blog, Redgannet, was adopted to add an air of mystery and to make himself more attractive to women. His father first whetted Redguga's appetite for all things natural by buying him his first pair of 7x35s and a copy of Thorburn's Birds. Having no mentor beyond an indulgent parent, he spent the first season hoping for an Egyptian Vulture at the bird table in his English garden. His most memorable birding moment is seeing an Egyptian Vulture with those same binoculars 26 years later. Redgannet is married to Canon, but his heart and half of his house belongs to Helen and their son Joseph. He is looking forward to communicating with people who don't ask if he is searching for the "feathered variety" of bird.