Nine in total, is the number of species that were integrated this 2012 to the official list of birds of the country for the tenth year published Ornithological Association of Costa Rica (AOCR) in the journal Zeledonia.
It is several ducks and shearwaters, two tropicbirds and even a hawk.
The first of these species is known as, the weevil pochard (Aythya valisineria). This is an open water diver duck, such as lakes, rivers, estuaries and coasts. Has strong legs and characterized by elongate profile. It feeds on aquatic plants and crustaceans.
According to the report, an individual of this species was seen floating and swimming in the dam Cachi in Cartago.
Also, is included, the tufted duck red head or American (Aythya americana), which are well known to breed in swamps and grasslands of western North America.
Two of them (one male and one female) were observed swimming and diving in Villa Prawns, Guanacaste.
The third “acquisition” was the crested duck (Lophodytes cucullatus), which is also typical of North America (northern half of EE. UU., Or southern Canada). In the country saw a young male with reddish crest. This was swimming in a small lake in the Children’s Eternal Forest in La Tigra de San Carlos.
In fourth place was a sea bird, the greater shearwater (Puffinus gravis). It is estimated that the world population is estimated at about 15 million. To confirm their presence in the country used a male specimen found in Tortuguero, Limón and is in the Museum of Zoology at the University of Costa Rica.
Another seabird, Manx shearwater this time (Puffinus Puffinus), joined as fifth in the list. This bird has a black back and white underparts, flying low over the sea and feeds on small fish and crustaceans making small dives.
Sixth is the shearwater Puffinus subalaris or the Galapagos, which is characterized by a small sea bird (with a wingspan of about 63 cm and an average weight of 175 grams). Has a dark brown back.
The whitetail tropicbirds (Phaethon lepturus) and red-tailed tropicbirds (Phaethon rubricauda) were incorporated in the seventh and eighth places. Their names make clear the color of their tails.
Both are characterized by the ability to make long ocean passages and nest in isolated tropical islands scattered in the world.
The first was observed among islets Juan Bautista, Montagne and Piedra sucia and the other north of the island Manuelita, both in the Cocos Island National Park.
Finally, in the ninth, highlighted the chicken hawk (Buteo plagiatus), a common bird in South America whose distribution barely Costa Rica.
As part of the new list also scientists agreed to confirm the addition of 12 new species to the list of Cocos Island, including the aforementioned tropicbirds.
Other adjustments to the list were seven category changes with the addition of photographs and museum specimens and abroad who helped confirm the presence of more species like smoked paíño (Oceanodroma markhami) and gull gray (Leucophaeus modestus).
Also for the first time in ten years, including the common and Spanish names and all described species.
The Scientific Committee responsible of this review was composed of experts Johel Chaves-Campos, Richard Garrigues, Alejandra Martinez, Michael Montoya, Oscar Ramirez and James Zook. He led the team scientist Gerardo Obando.
The new evidence was filed in the Natural History Department of the National Museum of Costa Rica.
Those wishing to collaborate with sightings of birds in the country, can find more information on http://listaoficialavesdecostarica.wordpress.com.