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 […]
Tag: all of Accipiter
Age-dependent diet choice in an aviantop predator
Northern Goshawk (Accipiter gentilis) Science Article 3 abstract Age-dependent breeding performance is arguably one of the best-documented phenomena in ornithology.The existence of age-related trends has major implications for life-history theory, but the proximatereasons for these patterns remain poorly understood. It has been proposed that poor breeding performanceof young individuals might reflect lack of foraging skills.We […]
BIOMETRIC DIFFERENCES BETWEEN AGE AND SEX CLASSESOF THE LEVANT SPARROWHAWK ACCIPITER BREVIPES ONMIGRATION AT EILAT, ISRaeL
Levant Sparrowhawk (Accipiter brevipes) Science Article 1 abstract The Levant sparrowhawk (Accipiter brevipes) is a typical raptor with reversedsexual size dimorphism wherein the female is larger than the male. Here, wepresent the factors contributing to biometric differences between the age andsex classes. REUVEN YOSEF, AND LORENZO FORNASARI, ISRaeL JOURNAL OF ZOOLOGY, Vol. 46, 2000, pp. […]
MIGRANT LEVANT SPARROWHAWKS (ACCIPITER BREVIPES) AT ELAT, ISRaeL: MEASUREMENTS AND TIMING
Levant Sparrowhawk (Accipiter brevipes) Science Article 2 abstract We banded 218 migrating Levant Sparrowhawks (Acdpiter brevipes) in the course of a raptorbanding project in Elat, Israel during the spring of 1996. To our knowledge, this is the largest sample examined in a single season. WILLIAM S. CLARK and Reuven Yosef, j. Raptor Res.3 1 (4):317-320 […]
White-bellied Goshawk (Accipiter haplochrous)
[order] ACCIPITRIFORMES | [family] Accipitridae | [latin] Accipiter haplochrous | [authority] Sclater, 1859 | [UK] White-bellied Goshawk | [FR] Autour a ventre blanc | [DE] Weissbauch-Habicht | [ES] Gavilan de New Caledonia | [NL] Nieuwcaledonische Havik Subspecies Genus Species subspecies Region Range Accipiter haplochrous AU New Caledonia Genus Members of the genus Accipiter are small […]
White-breasted Hawk (Accipiter chionogaster)
[order] ACCIPITRIFORMES | [family] Accipitridae | [latin] Accipiter chionogaster | [authority] Kaup, 1852 | [UK] White-breasted Hawk | [FR] epervier a poitrine blanche | [DE] Weissbrustsperber | [ES] Gavilan Ventriblanco | [NL] Witborstsperwer Subspecies Genus Species subspecies Region Range Accipiter chionogaster MA s Mexico to Nicaragua Genus Members of the genus Butastur are medium-sized hawks, […]
Vinous-breasted Sparrowhawk (Accipiter rhodogaster)
[order] ACCIPITRIFORMES | [family] Accipitridae | [latin] Accipiter rhodogaster | [authority] Schlegel, 1862 | [UK] Vinous-breasted Sparrowhawk | [FR] Epervier a poitrine rousse | [DE] Schlegelsperber | [ES] Gavilan Pechirrojo | [NL] Wijnborstsperwer Subspecies Monotypic species Genus Members of the genus Accipiter are small and medium-sized hawks, often called Sparrow-hawks or Goshawks. The females are […]
Tiny Hawk (Accipiter superciliosus)
[order] ACCIPITRIFORMES | [family] Accipitridae | [latin] Accipiter superciliosus | [authority] Linnaeus, 1766 | [UK] Tiny Hawk | [FR] Epervier nain | [DE] Daumlingssperber | [ES] Gavilancito Americano | [NL] Dwergsperwer Subspecies Monotypic species Genus Members of the genus Accipiter are small and medium-sized hawks, often called Sparrow-hawks or Goshawks. The females are almost invariably […]
Variable Goshawk (Accipiter hiogaster)
[order] ACCIPITRIFORMES | [family] Accipitridae | [latin] Accipiter hiogaster | [authority] Muller, 1841 | [UK] Variable Goshawk | [FR] Autour variable | [DE] Bunthabicht | [ES] Azor Variable | [NL] Witte Havik Subspecies Monotypic species Genus Members of the genus Accipiter are small and medium-sized hawks, often called Sparrow-hawks or Goshawks. The females are almost […]
Sulawesi Goshawk (Accipiter griseiceps)
[order] ACCIPITRIFORMES | [family] Accipitridae | [latin] Accipiter griseiceps | [authority] Schlegel, 1862 | [UK] Sulawesi Goshawk | [FR] Autour de Celebes | [DE] Graukopf-Habicht | [ES] Gavilan de Celebes | [NL] Grijskophavik Subspecies Genus Species subspecies Region Range Accipiter griseiceps AU Sulawesi Genus Members of the genus Accipiter are small and medium-sized hawks, often […]