Latitudinal variation in timing of dawn singing under natural and artificial light conditions

2017-08-11T18:43:17Z (GMT) by Arnaud Da Silva Bart Kempenaers
Region = country of recording (Spain, Germany, Finland) Location = name of the site (see Table S2) Longitude = longitude of each location in ºE Latitude = latitude of each location in ºN Treatment = type of location (lighted or control) Mean intensity at 0m = mean intensity at each location in lux, measured under the street lights, with the lux meter held 2m from the ground Mean intensity at 5m = mean intensity at each location in lux, measured 2 meters from the street lights, with the lux meter held 2m from the ground Mean intensity at 10m = mean intensity at each location in lux, measured 10 meters from the street lights, with the lux meter held 2m from the ground Date = date of recording (DDMM) Calendar date = date starting from 1 = 1 January Lay date = date standardized according to the great tit mean lay date of each region Sunrise = time of sunrise at each location on each day in HH:MM Extraction = name of the person who extracted the recording data (David =David Diez-Méndez / Satu = Satu Tolvanen) Temperature = temperature at sunrise at each location on each day in degrees Celsius Rain = presence of rain during the recording (yes/no) Robin onset = European robin start of dawn singing at each location on each day in minutes before sunrise Blackbird onset = Common blackbird start of dawn singing at each location on each day in minutes before sunrise Great tit onset = Great tit start of dawn singing at each location on each day in minutes before sunrise Blue tit onset = Blue tit start of dawn singing at each location on each day in minutes before sunrise Chaffinch onset = Common chaffinch robin start of dawn singing at each location on each day in minutes before sunrise