Data for nestling mass model with nest location and construction

Data table for linear mixed model (LMM) examining whether stem density at the nest site and nest wall thickness predicted nestling mass near fledging (Tables 1 & 2 of published article). Column headings: Year: year of nest construction; Plot: low, mid, or high elevation study plot; Female: unique female identifier; Nest: unique nest identifier; MeanNestlingMass: mean nestling mass in g for nest on day 6 of the nestling stage; Density: number of woody stems per square m within 1-m radius of nest; Thickness: nest wall thickness in cm; BroodSize: mean number of nestlings in the nest over days 3-5 of the nestling stage; Fledge: whether nest fledged young (1) or not (0); Hatch: date nestlings hatched; JDHatch: Julian date that nestlings hatched.

Data were collected from a breeding population of the migratory Black-throated Blue Warbler at the Hubbard Brook Experimental Forest (HBEF), Woodstock, New Hampshire, USA (43.93N, 71.75W), from 2010-2013.