| Titre : | Ringing & Migration 19(3) - May, 1999 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
J. R. Grant, Auteur ;
M. J. McGrady, Auteur
Two nestling Golden Eagles Aquila chrysaetos were radio-tracked from fledging until the birds were unable to be located. In addition two other free flying young birds - one juvenile and one sub-adult - were opportunistically caught, radio-tagged[...]
Article
Mike P. Toms, Auteur ;
Jacquie A. Clark, Auteur ;
Dawn E. Balmer, Auteur
This is the 61st annual report of the British Trust for Ornithology's Ringing Scheme, presenting research carried out and data received in 1997. Work examining the survival rates of 31 farmland passerines in relation to long-term changes in abun[...]
Article
D. Philip Whitfield, Auteur
This study compared two methods of ageing Dotterel, the 'standard' method that separates first-years from older birds (adults) on primary tip wear and presence/absence of juvenile inner median coverts, and the 'growth bar' method that assumes fi[...]
Article
Graham Scott, Auteur ;
K. F. Woodbridge, Auteur ;
A. E. Duncan, Auteur
Article
Helmut Wendeln, Auteur ;
Peter H. Becker, Auteur
Article
E. Cowley, Auteur
8,037 examinations were made of brood patches of Sand Martins from 1971 to 1992 in north Nottinghamshire and given one of 12 different descriptions. The 1,997 birds which were examined more than once (5,443 times in total) and identified as, 1,0[...]
Article
Iain G. Main, Auteur
Ring recoveries from Greenfinches making overseas movements to and from Britain are analysed. On average, approximately 0.1% of all British Greenfinches move to Ireland for the winter, and an estimated 2% or more of those breeding in southeast E[...]
Article
J. F. Amengual, Auteur ;
G. Gargallo, Auteur ;
M. Suarez, Auteur ;
J. Bonnin, Auteur ;
J. M. Gonzalez, Auteur ;
M. Rebassa, Auteur ;
M. McMinn, Auteur
The population size of the Mediterranean Storm Petrel Hydrobates pelagicus melitensis breeding on Cabrera archipelago was evaluated by using capture-recapture techniques (du Feu estimation) with the aid of tape-lures at the breeding colonies. Bo[...]
Article
S. C. Norman, Auteur
Goldcrests caught inland in Cleveland and on the Isle of May, Scotland had significantly shorter wings than migrant birds caught on the east coast of cleveland, suggesting that continental birds had longer wings than those of the British populat[...]
