By Marcel Gil-Velasco, Guillermo Rodríguez, Stephen Menzie and José Manuel Arcos Abstract Three medium-sized Puffinus shearwaters breed in Europe: Manx P. puffinus, Yelkouan P. yelkouan and Balearic Shearwaters P. mauretanicus. These three, considered a single, polytypic species until relatively recently, can be difficult to identify in some situations, notably in a vagrant context. This...

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