Tag: Red Crossbill

Is the nominate subspecies of the Common Crossbill Loxia c. curvirostra polytypic? I. Morphological differences among years at a single site.

Red Crossbill (Loxia curvirostra) Science Article 1 abstract The discovery of discrete vocal types of Common Crossbill in Western Europe opens the possibility that the nominate subspecies Loxia c. curvirostra in fact consists of a group of cryptic, vocally differentiated and reproductively isolated sibling species, reflecting a similar situation in North America. We compared measures […]

Population fluctuations of Siskins Carduelis spinus,Common Crossbills Loxia curvirostra, and Citril FinchesCarduelis citrinella in relationship to flowering intensityof spruce Picea abies

Red Crossbill (Loxia curvirostra) Science Article 2 abstract Annual population abundances from 1992 to 2002 of Siskins Carduelis spinus, CommonCrossbills Loxia curvirostra and Citril Finches Carduelis citrinella were studied in relationto flowering intensity of spruce Picea abies.We used point countmethod to study thechanges in abundance of the three species in the Northern Black Forest (southwest […]

Red Crossbill (Loxia curvirostra)

[order] PASSERIFORMES | [family] Fringillidae | [latin] Loxia curvirostra | [UK] Red Crossbill | [FR] Bec-croise des sapins | [DE] Fichten-Kreuzschnabel | [ES] Piquitureto Comun | [NL] Kruisbek Subspecies Genus Species subspecies Breeding Range Breeding Range 2 Non Breeding Range Loxia curvirostra EU, OR, NA, MA widespread Loxia curvirostra altaiensis Loxia curvirostra balearica Loxia curvirostra […]