Fig. 1
From: Using skin temperature and activity profiles to assign chronotype in birds
Time profile of ambient temperature, and rhythmicity of skin temperature and activity. Upper three panels show time profiles of ambient temperature (A), skin temperature (B) and activity (C) (10-min binned) against date and time for an exemplary Great Tit (frequency 173.204, male) kept in an outdoor aviary during winter. Bottom two panels show corresponding autocorrelation plots for skin temperature (D) and activity (E), including a red vertical line to indicate 24Â h