Information on the breeding biology of Sabine’s Gulls (Xema sabini) is very limited. Parmelee et al. (1967) detailed the species’ life history on Victoria Island, northern Canada. Abraham (1986) quantified nesting and brood-rearing chronology and success, and noted a strong relationship between nesting Sabine’s Gulls and Arctic Terns (Sterna paradisaea). Additionally, Abraham and Ankney (1984) described partitioning of food resources by Sabine’s Gulls and Arctic Terns.