Successful translocation of a nestling ornate hawk- Eagle (Spizaetus ornatus) in southern Brazil. (original) (raw)
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Sucessful translocation of a nestling Ornate Hawk Eagle (Spizaetus ornatus) in southern Brazil.
The translocation of individuals or populations is a management strategy that is widely used in conservation, especially for rare or threatened species. In September 2005, an Ornate Hawk-eagle (Spizaetus ornatus) nest with a nestling was found near the newly-constructed Barra Grande dam, on the Pelotas River, in northern Rio Grande do Sul. The nest was 1.20 m above the water surface and at risk of be submerged, and both the nestling and its nest were transported to a safe location 380 m away from the original location and 30 m above the high water level of the reservoir. After translocation the nestling was monitored for 60 days, until fledging. Translocation was considered successful due to the acceptance of the translocated nestling by the adults, inferred by the observation of parental care and nest defense after translocation. The in situ management that we report may be a useful alternative for ex situ management, at least in specific cases. It also must warn us of the need to have a raptor monitoring and rescue program during the construction of hydroelectric plants.
Birds of the Reserva Biológica do Mato Grande and surroundings, Rio Grande do Sul, Brazil
Check List, 2015
The Reserva Biológica do Mato Grande encompasses 5,161 hectares of wetlands, restinga forests and grasslands in southern Brazil. Aiming to assemble a list of bird species occurring in the reserve, we carried out 21 monthly expeditions from July 2007 to March 2009 and an additional visit on October 2014, totaling 341 hours of sampling. We additionally searched for records in online databases and museums. In total, 211 species of birds were found, compared to 223.83 (SD = 3.88) and 214.68 (SD = 4.71) species respectively predicted through Jackknife 2 and Chao 2 estimations. Plegadis chihi was the most abundant bird roosting in the reserve. The area is important for the conservation of Circus cinereus, Spartonoica maluroides, Limnoctites rectirostris and Sporophila palustris, which are considered threatened or near-threatened in state, national and/ or global levels. We emphasize the urgent need of implementing the Reserva Biológica do Mato Grande in order to conserve the regional avifauna.
First record of breeding of the Ornate Hawk-Eagle (Spizaetus ornatus) in southern Brazil.
ABSTRACT.— We provide the first record of breeding of the Ornate Hawk-Eagle (Spizaetus ornatus) for southern Brazil. In September 2005 a nest was found inside the reservoir of the Barra Grande Hydroelectric Power Station, northern Rio Grande do Sul. On the nest there was a nestling around two months old. Based in prey remains collected on the nest, birds were the main item in diet. This is an endangered species in the Atlantic Rain Forest biome in Brazil and the presence of the nest and nestling offer evidence of reproduction in Southern Brazil.
2012
We present 25 records of sightings, feathers and nests of the Harpy Eagle Harpia harpyja in the last 27 years and also the first detailed description of a nest of a Harpy Eagle in the Brazilian Atlantic Forest, found at the "Reserva Natural Vale" (RNV), Linhares, Espírito Santo, Brazil. Most Harpy Eagle records were obtained along the RNV roads by researchers and the RNV staff. Two nests have been mapped at the RNV until now. An especially relevant record occurred in 1997 when a juvenile Harpy Eagle was found dead, 4 km distant from the nest mapped and measured in 2010. The nest was 1.8 m X 1.6 m in diameter, and was built 28 m above ground, on the main fork of an Astronium concinnum tree measuring 37 m height and 1 m in diameter at breast height (DBH). This nest was the second of the species to be reported at RNV, being 5 km away from the first one, found in 1992, and built 30 m above the ground on the main fork of a Cariniana legalis tree 36 m high and 1.1 m in DBH. All Harpy Eagle records at RNV indicate that this protected area offers enough resources and has carrying capacity to maintain at least two Harpy Eagle pairs. However, because of the fragmentation around RNV, the local Harpy Eagle population cannot expand due to reduced habitat availability. The data gathered in this study confirm the importance of the RNV for the conservation of the critically endangered Harpy Eagle population of the Brazilian Atlantic Forest. We recommend the establishment of a reforestation program to increase the size and the connections of fragments around the RNV. We suggest that the creation and effective implementation of protected areas may contribute to Harpy Eagle protection in the Brazilian Atlantic Forest, but the long-term conservation of remaining populations is an essential step to allow for the occupation and re-colonization of other areas.
Revista Brasileira de Ornitologia - Ararajuba, 2012
We present 25 records of sightings, feathers and nests of the Harpy Eagle Harpia harpyja in the last 27 years and also the first detailed description of a nest of a Harpy Eagle in the Brazilian Atlantic Forest, found at the “Reserva Natural Vale” (RNV), Linhares, Espírito Santo, Brazil. Most Harpy Eagle records were obtained along the RNV roads by researchers and the RNV staff. Two nests have been mapped at the RNV until now. An especially relevant record occurred in 1997 when a juvenile Harpy Eagle was found dead, 4 km distant from the nest mapped and measured in 2010. The nest was 1.8 m X 1.6 m in diameter, and was built 28 m above ground, on the main fork of an Astronium concinnum tree measuring 37 m height and 1 m in diameter at breast height (DBH). This nest was the second of the species to be reported at RNV, being 5 km away from the first one, found in 1992, and built 30 m above the ground on the main fork of a Cariniana legalis tree 36 m high and 1.1 m in DBH. All Harpy Eagle records at RNV indicate that this protected area offers enough resources and has carrying capacity to maintain at least two Harpy Eagle pairs. However, because of the fragmentation around RNV, the local Harpy Eagle population cannot expand due to reduced habitat availability. The data gathered in this study confirm the importance of the RNV for the conservation of the critically endangered Harpy Eagle population of the Brazilian Atlantic Forest. We recommend the establishment of a reforestation program to increase the size and the connections of fragments around the RNV. We suggest that the creation and effective implementation of protected areas may contribute to Harpy Eagle protection in the Brazilian Atlantic Forest, but the long-term conservation of remaining populations is an essential step to allow for the occupation and re-colonization of other areas.
Birds in the Parque Estadual dos Três Picos, Rio de Janeiro, Brazil
Parque Estadual dos Três Picos (PETP), situated in the centre of Rio de Janeiro state (encompassing parts of the municipalities of Teresópolis, Guapimirim, Cachoeiras de Macacu, Nova Friburgo and Silva Jardim), is currently the state's largest environmental conservation unit occupying 58,000 ha. PETP is named after the Três Picos mountains located on the Teresópolis / Nova Friburgo border, a majestic assemblage of three granitic peaks reaching c.2,350 m. Since its creation in 2002, the PETP protects one of the largest and most important forested areas in Rio de Janeiro, guaranteeing the preservation of the headwaters that supply water to the cities adjacent to the park. The present study provides an inventory of the bird species found in the PETP and adjacent areas, as well as a basis for the conservation policies required to preserve the natural resources of this important remnant of Atlantic Forest in southeast Brazil.
Biotemas, 2011
Novos registros de aves para o Parque Nacional da Lagoa do Peixe, sul do Brasil. O Parque Nacional da Lagoa do Peixe, localizado na Planície Costeira do Rio Grande do Sul, teve sua avifauna amostrada inicialmente nas décadas de 1970 e 1980, datando de 1995 a primeira lista publicada das espécies de aves da área. Vários outros trabalhos divulgaram a ocorrência adicional de espécies no parque, resultando em um total de 211 espécies. A presente nota acrescenta 19 espécies à lista de aves do P. N. da Lagoa do Peixe, aumentando a riqueza conhecida de sua avifauna para 230 espécies. Três dessas espécies (Tachybaptus dominicus, Buteo albicaudatus e Petrochelidon pyrrhonota) constituem novos registros também para a península de Mostardas, longa e estreita restinga arenosa que separa a Lagoa dos Patos do oceano Atlântico.