Carrion Crow (Corvus corone corone) Science Article 3 abstract Habitat selection of co-existing Hooded Crows Corvus corone cornix and Carrion Crows C. c. corone was studied in the Susa valley, an alpine valley in the Iitalian hybrid zone. Foraging habitat use by the two races was not significantly different during the autumn-winter whereas it was […]

Azure-winged Magpie (Cyanopica cyanus) Science Article 5 abstract The Azure-winged Magpie Cyanopica cyanus is a small sized corvid, weighing around 70g. This species has a remarkable distribution, occurring only in eastern Asia (China, Korea, Mongolia, Japan and Russia) and in south-western Europe, in the Iberian Peninsula Filipe CANARIO et al, Ardeola 49(2), 2002, 283-286 Download […]

Azure-winged Magpie (Cyanopica cyanus) Science Article 3 abstract Changes in the haematocrit in Azure-winged Magpies Cyanopica cyanus during the reproductiveperiod. Previous studies have suggested that the haematocrit could be related to a number of factors within the birds’ biological cycle. In this study, the variation found in the haematocrit of Azure-winged Magpies Cyanopica cyanus during […]

Azure-winged Magpie (Cyanopica cyanus) Science Article 2 abstract In this study, we investigated patterns of natural covariation between testosterone and reproductive status in a cooperatively breeding bird species, the azurewinged magpie (Cyanopica cyanus). To assess the relationship between testosterone and breeding behavior,we also manipulated testosterone (T) levels early in the season (before breeding started) using […]

Azure-winged Magpie (Cyanopica cyanus) Science Article 4 abstract Morphometric and genetic analyses were performed to investigate the relationships between populations of the azure-winged magpie (Cyanopica cyanus). In the morphometric analysis 193 specimens were included representing seven of the nine currently accepted subspecies. Among eight characters analysed, four showed significant differences between samples from Spain and […]

Alpine Chough (Pyrrhocorax graculus) Science Article 2 abstract We analysed the call repertoires of the Red-billed Chough (Pyrrhocorax pyrrhocorax) and the AlpineChough (Pyrrhocorax graculus) across three continents (Europe, Asia, and Africa) for intraspecific and interspecificdifferences in call-repertoire size and discuss the factors that could have promoted its evolution. Paola Laiolo, Antonio Rolando, Anne Delestrade, and […]

Alpine Chough (Pyrrhocorax graculus) Science Article 1 abstract The home ranges and movements of marked Alpine choughs (Pyrrhocorax graculus) were investigated in Aosta Valley, western Italian Alps, in two study sessions: winter-spring 1996-1997 and winter-spring 1997-1998. Overall 28 birds were marked, six of these were also equipped with a small radio tag. P. Laiolo, A. […]

Alpine Chough (Pyrrhocorax graculus) Science Article 3 abstract The degree of sexual size dimorphism in a number of different morphological characters was examined in a social corvid, the Alpine Chough, using measurements taken on 178 males and 144 females ANNE DELESTRADE, The Auk 118(2):553-556, 2001 Download article download full text (pdf)

[order] PASSERIFORMES | [family] Corvidae | [latin] Garrulus glandarius | [UK] Jay | [FR] Geai des chenes | [DE] Eichelhaher | [ES] Arrendajo Euroasiatico | [NL] Gaai Subspecies Genus Species subspecies Breeding Range Breeding Range 2 Non Breeding Range Physical charateristics Rather small corvid, most colorful of family in west palearctic, with short bill, domed […]

[order] PASSERIFORMES | [family] Corvidae | [latin] Coloeus monedula | [UK] Jackdaw | [FR] Choucas des tours | [DE] Dohle | [ES] Grajilla Comun | [NL] Kauw Subspecies Genus Species subspecies Breeding Range Breeding Range 2 Non Breeding Range Physical charateristics A small black crow with a grey neck and pale eyes. Upper parts black […]