Skip to main content
U.S. flag

An official website of the United States government

Roost site selection by ring-billed and herring gulls

November 3, 2016

Gulls (Larus spp.) commonly roost in large numbers on inland and coastal waters, yet there is little information on how or where gulls choose sites for roosting. Roost site selection can lead to water quality degradation or aviation hazards when roosts are formed on water supply reservoirs or are close to airports. Harassment programs are frequently initiated to move or relocate roosting gulls but often have mixed results because gulls are reluctant to leave or keep returning. As such, knowledge of gull roost site selection and roosting ecology has applied and ecological importance. We used satellite telemetry and an information-theoretic approach to model seasonal roost selection of ring-billed (L. delawarensis) and herring gulls (L. argentatus) in Massachusetts, USA. Our results indicated that ring-billed gulls preferred freshwater roosts and will use a variety of rivers, lakes, and reservoirs. Herring gulls regularly roosted on fresh water but used salt water roosts more often than ring-billed gulls and also roosted on a variety of land habitats. Roost modeling showed that herring and ring-billed gulls selected inland fresh water roosts based on size of the water body and proximity to their last daytime location; they selected the largest roost closest to where they ended the day. Management strategies to reduce or eliminate roosting gulls could identify and try to eliminate other habitat variables (e.g., close-by foraging sites) that are attracting gulls before attempting to relocate or redistribute (e.g., through hazing programs) roosting birds.

Publication Year 2016
Title Roost site selection by ring-billed and herring gulls
DOI 10.1002/jwmg.1066
Authors Daniel E. Clark, Stephen DeStefano, Kenneth G. MacKenzie, Kiana K. G. Koenen, Jillian J. Whitney
Publication Type Article
Publication Subtype Journal Article
Series Title Journal of Wildlife Management
Index ID 70178127
Record Source USGS Publications Warehouse
USGS Organization Coop Res Unit Leetown