Installing nest boxes for wild birds in urban and suburban areas addresses a critical shortage of natural nesting cavities caused by the loss of old trees and buildings with suitable gaps.
Nest box provision is one of the simplest and highest-impact actions individuals can take to improve wild bird welfare in urban environments. The loss of natural cavities through tree felling and building modernisation has removed nesting sites that resident bird populations depend on for successful breeding. For species already under population pressure, reduced breeding success compounds the welfare problems caused by food scarcity, predation, and weather. Nest boxes are a direct, low-cost intervention that addresses a real welfare gap. The welfare benefit extends beyond the adult birds to include the survival of chicks that would otherwise fail due to inadequate or non-existent nesting sites.