Fox Sparrow (Passerella iliaca) Science Article 1 abstract On the basis of plumage coloration and mitochondrial DNA variation, four maingroups are recognized within the Fox Sparrow (Passerella iliaca): the red group (iliaca, RE),sooty group (unalaschcensis, SO), thick-billed (megarhyncha, TB), and slate-colored (schistacea,SC). To establish phylogenetic relationships among those four groups, we analyzed 2119 basepairs of […]
Category: Emberizidae
Sexing Corn Buntings Miliaria calandra by discriminant function: a reply
Corn Bunting (Emberiza calandra) Science Article 4 abstract Although, as Morgan (2006) points out, we cannot reject a systematic observer-associated error of 10 mm, we suggest that the existence of some female Corn Buntings (n = 5) with longer wing lengths than described in literature (Cramp & Perrins 1994) and the lack of a normal […]
Sex differentiation of Corn Buntings Miliaria calandra wintering in northern Spain
Corn Bunting (Emberiza calandra) Science Article 1 abstract A discriminant function was developed for sex differentiation of Corn Buntings Miliaria calandra wintering in northern Spain. The function, y = 0.136A + 0.288W-26.837, where A is wing length in mm and W is body weight in g, gives positive values for males and negative values for […]
Sexing Corn Buntings Miliaria calandra by discriminant function: a comment
Corn Bunting (Emberiza calandra) Science Article 3 abstract A recent paper on sexing Corn Buntings Miliaria calandra by discriminant function (Campos et al 2005) quotes wing lengths exceeding 100 mm for five of 51 females sexed by molecular methods. The occurrence of wings this long is noted by the authors as unusual, whereas they are […]
De Grauwe Gors Miliaria calandra: recente aantalsontwikkeling, habitatkeus en perspectieven in relatie tot het beheer van uiterwaarden en akkerland
Corn Bunting (Emberiza calandra) Science Article 2 abstract De Grauwe Gors dreigt uit Nederland te verdwijnen. Ook in de laatste bolwerken in Limburg en de uiterwaarden van de Waal ziet de situatie er voor deze karakteristieke soort niet rooskleurig uit. Een nauwkeurige blik op de lokale aantalontwikkelingen en veranderingen in de beschikbare broed- en winterhabitat […]
Fluctuations related to rainfall in richness and abundance of birds of steppic Mediterranean habitats
Corn Bunting (Emberiza calandra) Science Article 5 abstract The existence of interannual variations in the richness and abundance of bird species breeding in pseudo-steppic Mediterranean areas is analysed and related to the important fluctuations that take place in rainfall, which in turn deeply influence vegetation growth. The hypothesis of food limitation as a key factor […]
Known and predicted African winter distributions and habitat useof the endangered Basra reed warbler (Acrocephalus griseldis)and the near-threatened cinereous bunting (Emberiza cineracea)
Cinereous Bunting (Emberiza cineracea) Science Article 1 abstract The Basra reed warbler (Acrocephalus griseldis) and the cinereous bunting (Emberiza cineracea) are the only two Western Palearctic passerine bird species that overwinter in East Africa and are classified by BirdLife International as endangered and near-threatened, respectively. To refine the African wintering ranges of these two species, […]
Sexual differences in levels of blood carotenoids in Cirl Buntings Emberiza cirlus.
Cirl Bunting (Emberiza cirlus) Science Article 1 abstract Carotenoids are responsible for the bright red and yellow plumage of birds. These substances cannot be synthesised by birds and must be obtained from the diet and transported through the blood to the feathers. The carotenoid content of blood was measured in Cirl Buntings Emberiza cirlus, a […]
Striolated Bunting (Emberiza striolata)
[order] PASSERIFORMES | [family] Emberizidae | [latin] Emberiza striolata | [UK] Striolated Bunting | [FR] Bruant strie | [DE] Hausammer | [ES] Escribano Sahariano | [NL] Huisgors Subspecies Genus Species subspecies Breeding Range Breeding Range 2 Non Breeding Range Emberiza striolata EU, AF ne Africa to sw Asia and nw India Emberiza striolata jebelmarrae Emberiza […]
Swamp Sparrow (Melospiza georgiana)
[order] PASSERIFORMES | [family] Emberizidae | [latin] Melospiza georgiana | [UK] Swamp Sparrow | [FR] Pinson des marais | [DE] Sumpfammer | [ES] Gorrion pantanero | [NL] Moerasgors Subspecies Genus Species subspecies Breeding Range Breeding Range 2 Non Breeding Range Zonotrichia georgiana Melospiza georgiana NA nc, ne to ne Mexico Melospiza georgiana ericrypta Melospiza georgiana […]