TY - JOUR T1 - INTRASPECIFIC VARIATION IN EXTRA-PAIR COPULATION AND MATE DEFENSE IN COMMON GUILLEMOTS URIA AALGE JO - BEHAVIOUR PY - 1988/12/01 AU - HATCHWELL BJ ED - VL - 107 SP - 157 EP - 185 Y2 - 2024/12/22 ER -