You are not currently logged in.
Access JSTOR through your library or other institution:
If You Use a Screen ReaderThis content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Responses of Some Rare Cuckoo Hosts to Mimetic Model Cuckoo Eggs and to Foreign Conspecific Eggs
Arne Moksnes and Eivin Røskaft
Ornis Scandinavica (Scandinavian Journal of Ornithology)
Vol. 23, No. 1 (Jan. - Mar., 1992), pp. 17-23
Stable URL: http://www.jstor.org/stable/3676422
Page Count: 7
You can always find the topics here!Topics: Eggs, Warblers, Bird nesting, Parasitism, Species, Animal nesting, Parasite hosts, Statistical models, Meadows, Animal mimicry
Were these topics helpful?See something inaccurate? Let us know!
Select the topics that are inaccurate.
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Preview not available
Reactions of Willow Warblers Phylloscopus trochilus, Reed Buntings Emberiza schoeniclus, Blackcaps Sylvia atricapilla and Bluethroats Luscinia svecica, towards mimetic model Cuckoo Cuculus canorus eggs were tested by exchanging one of their eggs for a model plastic egg. Reactions of Willow Warblers, Reed Buntings and Bluethroats towards a foreign conspecific egg were also tested. Some Willow Warblers were also tested with Great Tit Parus major eggs. The Willow Warblers, Reed Buntings and Blackcaps rejected mimetic model eggs at a high rate (90-100%), while the Bluethroats showed a lower (but not statistically significant) rejection rate (63%). The Willow Warblers and the Bluethroats accepted conspecific eggs, but the Reed Buntings rejected some of these eggs (3 of 8 trials). Great Tit eggs, which resemble Willow Warbler eggs in colour and pattern but are bigger (although considerably smaller than Cuckoo eggs), were rejected in 5 of 6 trials. The responses of the above species towards mimetic model eggs were similar to those previously reported for non-mimetic eggs. This behaviour pattern is important in providing an explanation for their present status as only rare hosts of the Cuckoo.
Ornis Scandinavica (Scandinavian Journal of Ornithology) © 1992 Nordic Society Oikos