Crane Hawk (Geranospiza caerulescens) Science Article 1 abstract Crane Hawk (Gevanosfiza caerulescens) in_ habits the mangrove forests along the coast of Surinam. It is found near water in light forests and in cultivated areas about the coffee plantations. Very little is known of its breeding habits and the only description of its nest and eggs […]
Category: Accipitridae
The Complete Sequence of the Mitochondrial Genome of Buteo buteo (Aves, Accipitrid ) Indicates an Early Split in the Phylogeny of Raptors
Common Buzzard (Buteo buteo) Science Article 3 abstract The complete sequence of the mitochondrial (mt) genome of Buteo buteo was determined. Its gene content and nucleotide composition are typical for avian genomes. Due to expanded noncoding sequences, Buteo possesses the longest mt genome sequenced so far (18,674 bp). The gene order comprising the control region […]
Numerical response of common buzzards and predation rate of main and alternative prey under fluctuating food conditions.
Common Buzzard (Buteo buteo) Science Article 2 abstract We studied the numerical response of a population of the common buzzard Buteo buteo to the fluctuations of its main prey (voles) and alternative prey (forest grouse) in western Finland between 1979 and 1996. Populations of main prey fluctuated in a cyclic manner with three years between […]
Sexing, ageing and moult of Buzzards Buteo buteo in a southern European area
Common Buzzard (Buteo buteo) Science Article 1 abstract In order to obtain a reliable method for sexing and ageing Buzzards Buteo buteo breeding in southern Europe, 115 birds from a wildlife rehabilitation centre and 43 trapped birds were measured, sexed and aged over four years (2000-2003). Dead birds were sexed by examining their gonads, and […]
Diet of Common Buzzards (Buteo buteo) in southern Norway determined from prey remains and video recordings.
Common Buzzard (Buteo buteo) Science Article 5 abstract We examined the diet of six breeding Common Buzzard (Buteo buteo) pairs in southern Norway, by analysing pellets and prey remains collected around and in nests, and by video recording prey delivery at the nests. Mammals, birds and reptiles were the major prey groups. Amphibians were underestimated […]
Breeding density and brood size of Common Buzzard Buteo buteo in relation to snow cover in spring
Common Buzzard (Buteo buteo) Science Article 4 abstract In a 500 km2 study area situated 100-400 m above sea level in southern Norway, breeding density and offspring production of Common Buzzard Buteo buteo was studied in relation to snow depth in spring during 1985-97. Because a thick snow layer will reduce the availability of the […]
A Black Vulture aegypius monachus from Roman Valkenburg The Netherlands
Cinereous Vulture (aegypius monachus) Science Article 1 abstract The former occurrence of aegypius monachus in The Netherlands is attested by a bill fragment from the Roman period excavation at Valkenburg (South-Holland). The plausibility of the occurrence of this species in the Dutch prehistoric landscape and in the cultural context of the Roman settlement will be […]
Low mitochondrial DNA diversity in the endangered Bonelli’s Eagle ( Hieraaetus fasciatus ) from SW Europe (Iberia) and NW Africa
Bonellis Eagle (Aquila fasciata) Science Article 2 abstract This study is an initial survey of the genetic diversity and population structure of the endangered Bonelli’s Eagle (Hieraaetus fasciatus) in SW Europe (Iberia) and NW Africa, two locations where the species has undergone a severe decrease in numbers during the last decades. It is also the […]
Heterogeneus use of space in three breeding territories of Bonelli’s Eagle (Hieraaetus fasciatus)
Bonellis Eagle (Aquila fasciata) Science Article 3 abstract Radio-tracking of three breedingadults of Bonelli’s eagle in the ValencianRegion (Spain) was used to estimate their homerange sizes with the minimum convex polygonand Kernel estimator methods and identifytheir core ranges with the last one method.There was a considerable variability in the sizeand shape between the three territories, […]
Distribution pattern among Golden Eagle Aquila chrys tos and Bonelli s Eagle Hiera tus fasciatus in the Castellon province.
Bonellis Eagle (Aquila fasciata) Science Article 1 abstract Aims: Spatial distribution patterns of Golden Eagle Aquila chrys tos and Bonelli s Eagle Hiera tus fasciatus have been analyzed in a sympatric Mediterranean area.Location: Castellon province and the Teruel border area, in the M strazgo region. Methods: The nearest neighbor distance has been taken as an […]