NID - Nest ID
DID - Dyad ID
EG - Experimental group
JD - Julian Day (Jan 1 = julian day 1)
HD - Hour of the day
PD - Period of the day (A = morning, B = midday, C = afternoon)
DP - Hourly probability of detecting a nestling out of the nest (0 = no nestling detected; 1 = at least 1 nestling outside)
TIN - Maximum temperature registered inside the nest (on an hourly basis)
TDF - Temperature difference between TIN and outside temperature
BS - Brood size
AGE - Age of the oldest nestling in the brood
PR - Provisioning rate (visits/h)