
bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown
Published: March 13, 2024
ABSTRACT LAY SUMMARY Repeatability of construction behaviors in the wild is understudied House Wrens are a cavity-nesting songbird Wren nests highly variable their morphology Female repeatable cup composition, but not nest dimensions The built to match cavity unrelated nestling survival or female condition preferences for building may explain variation Construction behavior an aspect extended phenotype that allows organisms build structures alter environments potentially beneficial ways. Although individuals vary expression this (e.g., structure morphology), repeatability remain understudied, especially among free-living populations. Many oviparous taxa construct nests, making them particular interest because architecture directly affect fitness. Using free-living, songbird, Northern ( Troglodytes aedon ), as our model, we estimated contribution primary builder (the female) variability by measuring between successive clutches. We further examined whether was related nesting cavity, breeding date, success. found composition lining be female, although size and structural platform appeared more cavity. Nest remained throughout season, showing no significant correlations with it clutch offspring survival. Our study suggests likely product multiple factors including physical constraints. absence any clear links fitness indicates under strong selection. As result, diverse extreme among-individual species.
Language: Английский