Timing of autumn migration of young Corncrakes Crex crex
Article first published online: 17 MAR 2011
© 2011 The Authors. Journal compilation © 2011 British Ornithologists’ Union
Volume 153, Issue 2, pages 425–428, April 2011
How to Cite
DONAGHY, A. M., GREEN, R. E. and O’HALLORAN, J. (2011), Timing of autumn migration of young Corncrakes Crex crex. Ibis, 153: 425–428. doi: 10.1111/j.1474-919X.2011.01104.x
- Issue published online: 17 MAR 2011
- Article first published online: 17 MAR 2011
- Received 5 May 2010; revision accepted 22 January 2011. Associate Editor: Simon Butler.
- grass mowing;
- Mayfield method;
- survival rate
Knowledge of the timing of migration of young Corncrakes is required for effective implementation of conservation measures. Forty Corncrake chicks were radiotracked during the period between independence and departure from the natal area to determine the age and time at which fledged juveniles depart on migration. Departure occurred between early August and mid-September at a mean age of 44 days, around the age at which growth of the primary feathers ceases. Chicks from later broods are exposed to greater risk of being killed during mowing, but provision of late mowing options in conservation schemes could enhance their survival.