Carrion Crow (Corvus corone corone) Science Article 2 abstract The Carrion Crow (Corvus corone corone) and the Hooded Crow (C. corone cornix) have parapatric ranges in Europe with narrow areas of hybridization. Reproductive biology of populations of Carrion and Hooded crows and hybrids is described for four areas in northern Italy. Nonrandom mating was observed […]

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] Psilorhinus morio | [UK] Brown Jay | [FR] Geai brun | [DE] Braunhaher | [ES] Chara Papan | [NL] Bruine Gaai Subspecies Genus Species subspecies Breeding Range Breeding Range 2 Non Breeding Range Calocitta morio Psilorhinus morio MA widespread, also s Texas Psilorhinus morio morio Psilorhinus morio palliatus […]

[order] PASSERIFORMES | [family] Corvidae | [latin] Gymnorhinus cyanocephalus | [UK] Pinyon Jay | [FR] Geai des pinedes | [DE] Nacktschnabel-Haher | [ES] Chara pinonera | [NL] Pinyongaai Subspecies Genus Species subspecies Breeding Range Breeding Range 2 Non Breeding Range Garrulus cyanocephalus Gymnorhinus cyanocephalus NA w Physical charateristics Looks like a small dull blue crow […]