Don't think that is what cassidain was referring to, but in answer to your question: [h=4]Pair Bond[/h]Few data on long-term monogamy; San Pedro Mártir I., Mexico, 50% of pairs retained mate from 1 yr to next, 30% for 4 yr, <10% for 5 yr (Tershy 1998). Probability of males and females skipping ≥1 yr about equal. On Johnston Atoll, pair bond maintained throughout nesting period and often for several nesting seasons (EAS). On Ascension I. (s. Atlantic), 83.3% of 42 pairs remained together 1962–1964 (Simmons 1967).