mink frog-lithobates septentrionalis

adirondacks amazing america amphibian animal behavior biodiversity blotches close coloration declining deformities deformity dorsal exogenous field fold found frog froglithobates green growth habitat incredible indicator lake lateral life lithobates loon mink native natural nature new north odor onion pattern research retinoids rotting science septentrionalis smell species spring summer tympanum unique wild wildlife york