Publication Type: | Journal Article |
Year of Publication: | 1974 |
Authors: | Alnås, I |
Journal: | Ornis Scandinavica |
Volume: | 5 |
Issue: | 2 |
Date Published: | 1974 |
ISBN Number: | 00305693 |
Keywords: | Crex, Crex crex, Rallidae |
Abstract: | In a study of the territory fidelity of the Corncrake, 239 singing males were ringed in eight drained swamps on the island of Gotland in the Baltic between 1965 and 1973. A total of 25 birds were recovered in the study area after one or two years. The homing rate varied considerably from year to year. It was in the range of 20-35% in years with high population density, very much lower in other years. In low density years a high proportion of the recovered birds were at least two years old, while in high density years most recoveries were of birds ringed in the previous year. It seems that the study area carries a small and fairly constant number of old, possibly breeding, birds with high territory constancy, and a very fluctuating number of young birds which neither breed nor return the next year. |
URL: | http://www.jstor.org/stable/3676056 |
Short Title: | Ornis Scandinavica |
Taxonomic name: