Migratory birds depend on networks of stopover sites to rest and refuel during their journeys, and the degradation of these sites causes mass welfare impacts through exhaustion, starvation, and increased predation vulnerability.
Migratory birds undertake physiological feats of extraordinary endurance — prolonged fasting flights that push metabolic limits — and their welfare depends entirely on the quality of the habitats where they rest and refuel. Degradation of stopover sites through wetland drainage, coastal development, and pollution leaves birds arriving in an exhausted state with nowhere to feed, forcing them to continue migration in compromised condition or starve. The welfare impact of stopover site loss is concentrated and severe: it is not a gradual decline but an acute crisis for individual birds who arrive needing food and rest. Conservation of key stopover sites is therefore a direct animal welfare intervention, not merely a biodiversity concern.