| Titre : | Ringing & Migration 31(2) - décembre 1, 2016 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
Anthony D. Fox, Auteur ;
Thorsten J.S. Balsby, Auteur
Individual consumption rates of sunflower Helianthus annuus seeds were measured among five wild, free-living, colour-marked Bullfinches of the large, nominate race (Pyrrhula p. pyrrhula) and 13 individuals of the smaller race (P.p. coccinea) dur[...]
Article
Ruth H. Walker, Auteur ;
Robert A. Robinson, Auteur ;
Dave I. Leech, Auteur ;
Dorian Moss, Auteur ;
Carl J. Barimore, Auteur ;
Jeremy R. Blackburn, Auteur ;
Lee J. Barber, Auteur ;
Gary D. Clewley, Auteur ;
Diana X. De Palacio, Auteur ;
Mark J. Grantham, Auteur ;
Bridget M. Griffin, Auteur ;
Allison J. Kew, Auteur ;
Sabine Schaefer, Auteur ;
Jacquie A. Clark, Auteur
This is the 79th annual report of the British Trust for Ornithology’s Ringing Scheme, incorporating the report of the Nest Record Scheme and covering work carried out and data processed in 2015. Constant Effort Sites (CES) data from across Europ[...]
Article
Clive Walton, Auteur
A previous study suggested that Lesser Redpolls Acanthis cabaret in northern England moult before migration. Redpolls caught on autumn passage at Easter Inch Moss in the central lowlands of Scotland show a pattern of recoveries consistent with a[...]
Article
M. Di Vittorio, Auteur ;
S. Henriquet, Auteur ;
E. Kobierzycki, Auteur ;
L. Luiselli, Auteur ;
E.m. Hema, Auteur ;
L. Murabito, Auteur ;
G. Rannisi, Auteur ;
P. López-López, Auteur
Knowledge of juvenile dispersal is important for understanding population dynamics and for effective conservation, particularly of geographically isolated raptor populations. Here, we report the first documented case of a long-distance movement [...]
Article
Euan N. Furness, Auteur ;
Robert W. Furness, Auteur
Although studies of wing length in many bird species show longer wings in adults than in juveniles, and increases in wing length among immature age classes of long-lived birds, evidence for an increase in wing length among adult small passerines[...]
Article
Oscar Gordo, Auteur ;
José Luis Arroyo, Auteur ;
Rubén Rodríguez, Auteur ;
Antonio Martínez, Auteur
Sexes cannot be distinguished with certainty by human observers in many avian species. However, some apparently monomorphic species have small but measurable sexual dimorphisms in biometry, which can be used to determine sex. Here, we develop a [...]
