Comparative bioacoustics of territorial song in the Goldcrest (Regulus regulus) and its implications for the intrageneric phylogeny of the genus Regulus (Aves: Passeriformes: Regulidae)

Martens J., Packert M., Nazarenko A, Valchuk O., Kawaji N.

Zoologische Abhandlungen 1998; 50(7): 99-128