Egyptian Vulture (Neophron percnopterus) Science Article 6 abstract In northern Spain the first flights of fledgling Egyptian Vultures Neophron percnopterus took place between 28 July and 28 August (at the age of 68-80 d). The post-fledging period ended between 29 August and 5 September when the young migrated (at the age of 89-113 d). The […]
Category: Accipitriformes
Organization and Variation of the Mitochondrial Control Region in Two Vulture Species, Gypaetus barbatus and Neophron percnopterus
Egyptian Vulture (Neophron percnopterus) Science Article 7 abstract We report the first entire mitochondrial DNA (mtDNA) control region sequences in two endangered vulture species, the bearded vulture (Gypaetus barbatus) and the Egyptian vulture (Neophron percnopterus). Results showed that the general organization of vulture control regions was very similar to other birds, with three distinct domains: […]
Factors influencing the distribution, abundance and nest-site selection of an endangered Egyptian vulture (Neophron percnopterus) population in Sicily
Egyptian Vulture (Neophron percnopterus) Science Article 8 abstract The Egyptian vulture (Neophron percnopterus) breeds in Sicily and, in 22 years of monitoring, has shown a decline followed by a slight recovery. We used Generalised Linear Models to predict: (1) the distribution range, (2) the habitat selection within the range, (3) the quality (i.e., occupation rate, […]
BEHAVIOR, DIET, AND BREEDING BIOLOGY OF DOUBLETOOTHED KITE AT A GUATEMALAN LOWLAND SITE
Double-toothed Kite (Harpagus bidentatus) Science Article 1 abstract We studied Double-toothed Kites (Harpagus bidentatus) in tropical lowlandforest at Tikal National Park, Peten, Guatemala, documenting behavior and diet during theincubation and nestling periods. These 200-g kites are Accipiter-like in form and strikinglysize-dimorphic for a kite. Modal clutch size was two, producing 0.63 fledglings per nestingattempt and […]
Nesting of the Crane Hawk in Surinam.
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 […]
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 […]