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Message: <blockquote data-quote="Joern Lehmhus" data-source="post: 142227" data-attributes="member: 3229">Hi Alex, That´s interesting. The book "Where to watch birds in Tenerife" by Eduardo Garcia del Rey said that risoria on Tenerife is in danger of being replaced by decaocto and there is only one site where there is still a good population of risoria and no decaocto (don´t remember which site, can look it up). However, that hybridization occurs at all is only mentioned in one half -sentence somewhere in this book.The calls I heard were like kuk-kooKOOO-kook; the alarm calls a soft mewing cry, slightly reminiscent of a small gull-the calls very similar, perhaps with a slightly different sound  (dialect?) compared to middle european S. decaocto, the alarm call being the same as in middle european decaocto-at least in my ears.I have never read or heard of hybrids of either of the 2 species with S. turtur in the wild.</blockquote>