Some aspects of the breeding behaviour of Peregrine falcons on Langara Island, B.C. ...

• Main Author: Nelson, Robert Wayne
• Format: Master Thesis
• Language: English
• Published: University of Calgary 1970
• Subjects: QL 696 A2 N44 1970; Peregrine falcon; Birds - Behavior; peregrine falcon
• Online Access: https://dx.doi.org/10.11575/prism/19920; https://prism.ucalgary.ca/handle/1880/13156

Bibliography: p. 289-296. ... : The behaviour of Peregrine 'Falcons (Falco ueregrinus pealei) in the breeding season was studied on Langara Island, in the Queen Charlotte Islands group of British Columbia in 1968, 1969 and 1970, for a total of almost twelve months .in the field. In 1968 one pair of falcons and their young was observed closely from coastal rocks and from a blind overlooking the nest ledGe at Area A. In 1969 another pair was studied in similar fashion at Area B. In all three years observations were made on several other pairs and their young. The Peregrine Falcon has a vocabulary of at least twelve separable calls. Adult Langara Island Peregrine Falcons appear not to migrate. In 1969 a pair was observed through the Preincubation Phase. The male seems to take the initiative at this period, stimulating the female by his flight behaviour, Ledge-demonstration displays and Male-ledge displays. If disturbed at a prospective nest ledge, the falcons my quickly abandon it in favour of another ledge some distance away. Transfers of ...