Short-toed Snake Eagle (Circaetus gallicus) Science Article 2 abstract Capsule There is some evidence of susceptibility to stochastic or human factors. Aims To describe the phenology and breeding success of one of the densest populations of Short-toed Eagle in Europe. Methods All nests in the Dadia-Lefkimi-Soufli forest in northeast Greece were located and visited regularly […]

Short-tailed Hawk (Buteo brachyurus) Science Article 1 abstract The Short-tailed Hawk Buteo brachyurus occurs from south USA through Central America, and south to northern Argentina and Chile (Thiollay 1994). This species is found to be uncommon, although widespread in large areas of South America (Robinson 1994, Manosa et al. 2003, Blendinger et al. 2004). Buteo […]

Short-toed Snake Eagle (Circaetus gallicus) Science Article 1 abstract […].The aim of this study was to provide information on the visible autumn migration of Shorttoed Eagles at these two sites of the Central Mediterranean through systematic observations made during the second half of September 2001. […]. Agostini, N., Baghino, L., Panuccio, M. & Premuda, G., […]

Savanna Hawk (Buteogallus meridionalis) Science Article 1 abstract The ecology of the Savanna Hawk (Buteogallus meridionalis) was studied in the palm-savannas of Venezuela in 1978-1980. Pairs produced only one egg per clutch, no more than one young per calendar year, and had eggs or young in nests from February to December, coinciding largely with the […]

Rough-legged Hawk (Buteo lagopus) Science Article 1 abstract Visceral gout is reported for the first time in a rough legged hawk (Buteo Iagopus). Urate crystals were present on the pencardium, thoracic and abdominal air sacs, and the ventral surface of the liver. The liver and spleen also had urate crystals throughout the parenchyma. There was […]

Roadside Hawk (Buteo magnirostris) Science Article 1 abstract In 1993 and 1994, we collected dataon the diet and foraging behavior of Roadside Hawks(Buteo magnirostris) in primary tropical forest withslash-and-burn farming landscape nearby. We identified140 prey items brought to nests: 90 in the farminglandscape and 50 in the forest. Reptiles (57.1%, mostlylizards) and amphibians (24.3%) were […]

Northern Harrier (Circus cyaneus) Science Article 3 abstract The use of habitats by hunting Hen Harriers Circus cyaneus just prior to the settlement period was investigated on Orkney, where numbers have declined by 70% over the last 20 years. Both males and females hunted over areas that were closer to subsequent breeding territories. Neither sex […]

Northern Harrier (Circus cyaneus) Science Article 1 abstract Hen Harrier chicks were wing-tagged in four regions in Scotland and in North Wales between 1990 and 1995, and resighted or recovered dead as fully grown birds during the non-breeding season (August to April) throughout Britain and Ireland, and on the Continent, until April 1997. Results were […]

Northern Harrier (Circus cyaneus) Science Article 2 abstract Egg and liver samples of Montagu’s and Marsh Harriers from the 1990’s were examined for their burden of DDT and PCB. The DDT burden in both species was distinctly higher in the eggs than in juveniles and adults, whereby the values for the adults were clearly higher […]

Northern Goshawk (Accipiter gentilis) Science Article 2 abstract Delayed density-dependent mortality induced by delayed numerical response of predators can drive prey populations to fluctuate in high-amplitude cycles. We studied numerical response of goshawks Accipiter gentilis to varying densities of their main prey (forest grouse) in western Finland during 1979_/1996. Occupancy rate of goshawk territories tracked […]