În warblers, migrația mai înseamnă femei drabber

                        https://www.google.ro/search?tbs=simg:CAESxgEawwELEKjU2AQaAggEDAsQsIynCBpgCl4IAxIo0xbPFtsL4AvVFooezxWfHo0e3wvFKMYo0CHTIb8ozSjAKN4h0iHOKBowIf-v5nDrYNi_1jLlx0l4NkYeFAo2cI_1oHT2EL-L-97L-v55P7it2zt8HSxbtNgoFjDAsQjq7-CBoKCggIARIENLYkOgw

                              http://news.sciencemag.org/biology/2015/05/warblers-longer-migration-means-drabber-females                                   

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