Fixed effects used in the GLMM 1, GLMM 2, and GLMM 3 for the probability of vocalization by radiotracked fledglings (29 in 2010 and 10 in 2011).

1Difference in body weight between years t = 2.31, p = 0.0265.2Difference in measured wing length between years t = 3.13, p = 0.0034.3Total number of individuals fledged from one individual nestbox.4Actual number of individuals still alive seen outside the nestbox on any given day.5Maximal number of live individuals seen outside the nestbox after all young had fledged.6, 7Individual fledgling and pooled sibling home range sizes (data from all siblings from particular nestbox) throughout the PFDP were established by minimum convex polygon method [64].8Number of dead fledglings as percentage of the total number of fledglings.9, 10, 11Log-transformed for the analyses.