THE MIGRATION OF PASSERINE NIGHT MIGRANTS ACROSS THE ENGLISH CHANNEL STUDIED BY RADAR
- 1 January 1969
- Vol. 111 (1) , 48-79
- https://doi.org/10.1111/j.1474-919x.1969.tb01604.x
Abstract
Summary: An account is given of the migration of British summer resident small passerine night migrants across the English Channel in spring and autumn, as detected by radar.The main times of passage of each species have been determined from the trapping records of Dungeness Bird Observatory.The tracks of the migrants are consistent with the view that they always head about NNW in spring and SSE in autumn but may be drifted by a cross‐wind.The wind‐direction and speed had a paramount influence on the volume of migration in both spring and autumn. Temperature had no effect in autumn, and though there was more migration with warmer than cold weather in spring, this need not have been due to the influence of temperature as such.Small reversed movements occurred, with southerly winds in autumn or, more doubtfully, with northerly winds in spring.Keywords
This publication has 1 reference indexed in Scilit:
- Evidence concerning the Function of Nocturnal Call Notes of Migratory BirdsOrnithological Applications, 1962