E. Gwinner

Periodicity of a circadian rhythm in birds by species-specific song cycles (Aves, Fringilli-dae:Carduelis spinus, serinus serinus)

E. Gwinner, E. Gwinner, 1966, Experientia.

Do night-active birds lack daily melatonin rhythms? A case study comparing a diurnal and a nocturnal-foraging gull species

T. Groothuis, M. Wikelski, Elisa M. Tarlow, 2005, Journal of Ornithology.

Periodicity of a circadian rhythm in birds by species-specific song cycles (Aves, Fringillidae: Carduelis spinus, Serinus serinus)

E. Gwinner, 2005, Experientia.