424. Juhant, M.A. and M.D. Saggese. 2026. Photographic surveys reveal site-specific differences in age structure and age-specific lesion prevalence in overwintering Black-chested Buzzard-Eagles (Geranoaetus melanoleucus) in Patagonia, The Wilson Journal of Ornithology, DOI: 10.1080/15594491.2026.2688599.