The document discusses Canada geese and retention basins. It recommends a distance of 5 statute miles between airports and wildlife attractants to protect approach and departure airspace. Retention basins can be used to protect and feed geese during breeding, molting, and migration if they are designed to detain water for a maximum of 48 hours and do not have above-ground standing water. The local Canada goose population cycle involves residents that remain year-round and migrants that stop over seasonally.