Chaffinch (Fringilla coelebs) Science Article 4 abstract Wild-caught animals are often given a settling in period before experimental trials are initiated.We used wild-caught chaffinches (Fringilla coelebs) to investigate (a) the effect ofsettling in period duration on the likelihood that chaffinches foraged during experimental trialsand (b) whether settling in period duration influenced measures of foraging and […]
Category: Fringillidae
Evolution of the major histocompatibility complex class I genes in Serinus canaria from the Canary Islands is different from that of Asian and African continental Serinus species
Canary (Serinus canaria) Science Article 1 abstract The radiation of canaries (genus Serinus) occurred in Africa and Eurasia during the Miocene Epoch (9 million years ago) according to maximum parsimony (MP), neighbor-joining (NJ), maximum likelihood (ML) and Bayesian methodologies. Serinus canaria (wild canary) and S. serinus (European serin) together form one of the several polytomies […]
Flock composition, agonistic behaviour and body condition of wintering Bullfinches Pyrrhula pyrrhula
Bullfinch (Pyrrhula pyrrhula) Science Article 1 abstract During October-April of 1989-2003 Imade observations on size and sexual composition of Bullfinch Pyrrhula pyrrhula flocks (ringed and unringed birds), recorded interactions betweenmembers and estimated the body condition of birds observed in amixed forest in central Norway. The flock size did not change with ambient temperature and ranged […]
Bullfinch Pyrrhula pyrrhula breeding ecology in lowland farmland and woodland: comparisons across time and habitat
Bullfinch (Pyrrhula pyrrhula) Science Article 2 abstract Bullfinch Pyrrhula pyrrhula populations decreased by 33% in Britain over the years 1977-82, the period of steepest decline. The timing of this decline and its greater severity on farmland (-65%) than in woodland (-28%) point to agricultural intensification as a likely environmental cause, but previous analyses of survival […]
Structural conservation and variation in the mitochondrial control region of fringilline finches (Fringilla spp.) and the greenfinch (Carduelis chloris
Brambling (Fringilla montifringilla) Science Article 1 abstract We sequenced the entire control region and portions of flanking genes (tRNAPhe, tRNAGiu, and ND6) in the common chaffinch (Fringilla coelebs), blue chaffinch (F. teydea), brambling (F. montifringilla), and greenfinch (Carduelis chloris). In these finches the control region is similar in length (1,223-1,237 bp) and has the same […]
Abundance of owls and Bramblings Fringilla montifringilla inrelation to mast seeding in south-eastern Sweden
Brambling (Fringilla montifringilla) Science Article 2 abstract We investigated the relationship between mast seeding in beech Fagus sylvaticus and oak Quercus spp., and the occurrence of the rodent-dependent predators Tengmalm’s Owl aegolius funereus, Long-eared Owl Asio otus and Tawny Owl Strix aluco in south-eastern Sweden (Blekinge) 1992-2000. We also compared available data on seed production […]
Biometrics, ageing, sexing and moult of the Blue Chaffinch Fringilla teydea teydea on Tenerife (Canary Islands)
Blue Chaffinch (Fringilla teydea) Science Article 1 abstract The Blue Chaffinch Fringilla teydea is one of a few Palearctic species for which biometric data are lacking from the field; we address this issue here. Blue Chaffinches were caught by mist net, at ten sites on Tenerife (Canary Islands), and measured. Data on biometrics and moult […]
Density estimates, microhabitat selection and foraging behaviour of the endemic Blue Chaffinch Fringilla teydea teydea on Tenerife (Canary Islands)
Blue Chaffinch (Fringilla teydea) Science Article 2 abstract Point counts were used for censusing birds. Data were analysed with the DISTANCE software programs using an average detectability function. Microhabitat structure was characterized by measuring 11 variables in a 25m radius at each point. We used Poisson regression models to predict counts for Blue Chaffinch from […]
Notes on the Hoary Redpoll on its central Canadian Arctic breeding grounds
Arctic Redpoll (Carduelis hornemanni) Science Article 1 abstract G. Ron Austing and I made the following observations of the Hoary Redpoll (Acanthis hornemanni) during the period of 30 June to 15 July 1972 while photographing birds around Bathurst Inlet Lodge at the mouth of the Burnside River on Bathurst Inlet (66′ 50′ N., 108′ 02′ […]
Taxonomy and evolution in Redpolls Carduelis flammea hornemanni a multivariate study of their biometry.
Arctic Redpoll (Carduelis hornemanni) Science Article 2 abstract Multivariate analyses were performed on four standard measurements (wing-chord, tail-length, bill-length and bill-depth) of over 1000 sexed Redpolls, including samples from all currently recognized taxa. Samples of flammea and exilipes, phenotypically defined by colour were separable biometrically, as were samples of rostrata and hornemanni. Dark Redpolls from […]