DEGRADATION OF GREAT TIT (PARUS MAJOR) SONG BEFORE AND AFTER FOLIATION : IMPLICATIONS FOR VOCAL COMMUNICATION IN A DECIDUOUS FOREST
NON-BREEDING NAZCA BOOBIES (SULA GRANTI) SHOW SOCIAL AND SEXUAL INTEREST IN CHICKS : BEHAVIOURAL AND ECOLOGICAL ASPECTS
BEHAVIORAL EVIDENCE FOR THE CUTANEOUS EXPRESSION OF EMOTION IN A CHIMPANZEE (PAN TROGLODYTES)
SEX DIFFERENCES IN FEEDING BEHAVIOUR AT FEEDING STATION SCALE IN SOAY SHEEP (OVIS ARIES)
SOME MALES ARE CHOOSIER THAN OTHERS : SPECIES RECOGNITION IN BLUE WAXBILLS
SEX DIFFERENCES IN THE MATE SELECTION PROCESS OF THE MONOGAMOUS, BIPARENTAL CONVICT CICHLID, ARCHOCENTRUS NIGROFASCIATUM
MATE GUARDING CONFLICT, EXTRA-PAIR COURTSHIP AND SIGNALLING IN THE HARLEQUIN DUCK, HISTRIONICUS HISTRIONICUS