American Kestrel (Falco sparverius) Science Article 13 abstract A herpesvirus was isolated from the liver of a captive-bred American kestrel(Falco sparverius) which had died of inclusion body disease. Initial isolation wasachieved in chicken embryo fibroblasts after three blind passages. Cell-adapted virusproduced a distinct rounding of CEF cells within 24 to 48 h. Biologic and serologictests […]
Tag: American Kestrel
Regulation of Yolk-Androgen Concentrations byPlasma Prolactin in the American Kestrel
American Kestrel (Falco sparverius) Science Article 12 abstract The concentrations of maternally derived androgens in the yolks of avian eggs vary within and among clutches, but a mechanistic basis for this variation has not been elucidated. We investigated in the American kestrel, Falco sparverius, whether changes in plasma-prolactinconcentrations induced by changes in photoperiod and food […]
Copulatory behaviour and paternity in the American kestrel:the adaptive significance of frequent copulations
American Kestrel (Falco sparverius) Science Article 11 abstract The adaptive significance of repeated withinpair copulations is not well understood. We analysed thecopulatory behaviour of 16 pairs of solitary-nesting American kestrels, Falco sparverius, in southernQuebec (Canada), and the achieved reproductive success (paternity) of 21 kestrel families determined byDNA fingerprinting, in terms of four hypotheses. (1) The […]
American Kestrel (Falco sparverius)
[order] FALCONIFORMES | [family] Falconidae | [latin] Falco sparverius | [authority] Linnaeus, 1758 | [UK] American Kestrel | [FR] Crecerelle d’Amerique | [DE] Buntfalke | [ES] Cernicalo chitero | [NL] Amerikaanse Torenvalk Subspecies Monotypic species Genus Members of the genus falco are mostly medium-sized falcons, but vary from the large peregrine falcon to the small […]