See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/233754923 Egg-Laying and Photorefractoriness in the European Kestrel Falco tinnunculus Article in Journal of Avian Biology · July 1992 DOI: 10.2307/3676667 CITATIONS 8 READS 66 4 authors, including: Some of the authors of this publication are also working on these related projects: Dear Wolfgang: Thanks for asking. Right now, I am writing - in fact about to finish - the biography of Jürgen Aschoff. Any interesting memories you have of him would be warmly welcomed. With kind regards, Serge Daan View project Serge Daan University of Groningen 257 PUBLICATIONS 16,703 CITATIONS SEE PROFILE Cor Dijkstra University of Groningen 87 PUBLICATIONS 4,587 CITATIONS SEE PROFILE All content following this page was uploaded by Cor Dijkstra on 03 January 2017. The user has requested enhancement of the downloaded file. All in-text references underlined in blue are added to the original document and are linked to publications on ResearchGate, letting you access and read them immediately.