Bergeron, Andrea, and Julie Ellis. “Body Size and Hematological Values for Herring Gulls (Larus Argentatus) Breeding in the Northeastern United States”. Wildlife Rehabilitation Bulletin 27, no. 1 (June 30, 2009): 34–41. Accessed February 3, 2023. https://nwrajournal.online/index.php/bulletin/article/view/118.