Ring-billed Gull (Larus delawarensis) Science Article 10
abstract
Band-recovery dam for Ring-billed (Larus delawarensis) and Herring (L. argen- tatus) Gulls were analyzed to determine the origins of gulls breeding within the Great Lakes region, the extent of lake and colony fidelity, and the winter and breeding season distributions of gulls of various age classes
STEVEN W. GABREY, J. Field Ornithol., 67(2):327-339