Egyptian Vulture (Neophron percnopterus) Science Article 2 abstract The genome size and sex of the Egyptian Vulture (Neophron percnopterus), a sexually monomorphic bird, were identified from blood samples by the use of flow cytometry (FCM). This technique allowed evaluation of the slightly higher amount of DNA content in the homogametic male compared to that of […]

Egyptian Vulture (Neophron percnopterus) Science Article 4 abstract We studied the diet of the Egyptian Vulture in Biscay, northernIberian Peninsula, between 2000-2003. We monitored adults in territories,searched for nests, and collected food remains in nest and platform. We collectedand identified a total of 143 prey remains, and classified them into 32 categories. HIDALGO S et […]

Egyptian Vulture (Neophron percnopterus) Science Article 3 abstract By means of satellite telemetry, the migrations of three young Egyptian vultures (Neophron percnopterus) from France and Bulgaria were studied and data obtained (over 4,300 Argos locations) to describe movement patterns, timing of migration, routes followed, speed of flight and ranging behaviour in Africa. Bernd-U. Meyburg, Max […]

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 […]

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 […]

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 […]

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 […]

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 […]

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 […]

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 […]