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Table 1 Final selection steps for inclusion of birds’ records into chronotype analysis. Sample size and applied criteria (i.e., diel periodicity of 23–25 h and presence of an autocorrelation peak at 24 h) for skin temperature and activity for the ten individual Great Tit [Female (F) and Male (M)] retained after initial filtering steps. Diel days available refers to the number of rhythmic days included while filtering skin temperature in the 3-day sliding window approach (incl. the total number of recorded days in brackets). The remaining nine filtered-out individuals with zero diel days are not shown. Two additional individuals (marked in bold font) were excluded from the chronotype analyses as they did not fulfil all selection criteria (173.391 M had no positive autocorrelation at 24-h peak and 173.258 M had > 25% of data missing in the diel skin temperature profile (173.258 M)

From: Using skin temperature and activity profiles to assign chronotype in birds

Individual

Sex

Diel days available

Skin temperature

Activity

Periodicity

Autocorrelation

Periodicity

Autocorrelation

173.204

M

16 (16)

24.08

TRUE

24.07

TRUE

173.258

M

3 (16)

24.05

TRUE

23.42

TRUE

173.308

F

14 (16)

24.03

TRUE

24.07

TRUE

173.351

M

6 (16)

24.17

TRUE

23.81

TRUE

173.391

M

3 (16)

24.29

FALSE

24.09

TRUE

173.746

M

4 (10)

23.90

TRUE

23.51

TRUE

173.795

M

8 (16)

24.21

TRUE

24.15

TRUE

173.815

F

16 (16)

24.05

TRUE

24.03

TRUE

173.841

M

14 (16)

24.06

TRUE

24.04

TRUE

173.984

M

9 (16)

23.80

TRUE

23.82

TRUE