Pied Flycatchers Prefer to Nest in Clean Nest Boxes in an Area with Detrimental Nest Ectoparasites

Abstract

? 0.4 days between the thirdand fourth-hatched chicks. If these limited data are representative (no other detailed information is available), all chicks are well separated in the pattern of size differences initially produced within broods by hatching asynchrony. Firstlaid eggs averaged 2.6% less than second-laid eggs in volume, but it seems safe to infer that this difference must be of little importance in reducing the initial bodymass difference between firstand second-hatched chicks.