Summary
The relation between the ‘homecoming-speed’ of carrier-pigeons and the influence of sexhormones and prolaktin is reported.
It is further examined whether the influence of prolaktin (breeding on 10–15 days old eggs) or psychological factors (feeding of young individuals of more than 15 days) are the factors, accelerating the ‘homecoming-speed’. Best results are obtained by combining breeding 1–6 days old eggs and feeding young pigeons of 2–3 weeks.
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In memoriam Heinz Knieriem zu seinem 15. Todestage
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Clausen, D.M., Koller, G. & Kuhnen, H. Unterliegt die Heimkehrgeschwindigkeit der Brieftauben hormonalen Einflüssen?. Experientia 14, 386–388 (1958). https://doi.org/10.1007/BF02159172
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DOI: https://doi.org/10.1007/BF02159172