Some aspects of the breeding behaviour of Peregrine falcons on Langara Island, B.C.
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 f...
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ftunivcalgary:oai:prism.ucalgary.ca:1880/13156 2023-08-27T04:11:28+02:00 Some aspects of the breeding behaviour of Peregrine falcons on Langara Island, B.C. Nelson, Robert Wayne Myres, M. Timothy 200000254 1970 xiii, 306 leaves : ill. 30 cm. application/pdf http://hdl.handle.net/1880/13156 https://doi.org/10.11575/PRISM/19920 eng eng University of Calgary Calgary 82481542 Nelson, R. W. (1970). Some aspects of the breeding behaviour of Peregrine falcons on Langara Island, B.C. (Unpublished master's thesis). University of Calgary, Calgary, AB. doi:10.11575/PRISM/19920 http://dx.doi.org/10.11575/PRISM/19920 QL 696 A2 N44 1970 http://hdl.handle.net/1880/13156 University of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission. QL 696 A2 N44 1970 Peregrine falcon Birds - Behavior master thesis 1970 ftunivcalgary https://doi.org/10.11575/PRISM/19920 2023-08-06T06:32:44Z 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 food from the male to the female were first observed almost a month prior to egg-laying. Food-transfers are similar to those seen between adults and fledglings. During parts of courtship, the female exhibits nestling-like behaviour. The significance of markedly lethargic behaviour in the female prior to the laying of the eggs is discussed. During incubation, the majority of hunting is done by the male in twilight before dawn. During the daylight hours he retrieves food for himself and the female from caches on the cliff. Only the female incubates at night. Although the male plays a role in daytime incubation, the amount of time that he devotes to this is small. This is thought to be partly explained by his inability (due to his smaller size) to brood nestlings effectively. The female broods the nestlings for about a week after hatching, but continues to brood them at night for some time longer. When the nestlings become too large for this, the female continues a nightly 'guard duty' ... Master Thesis peregrine falcon PRISM - University of Calgary Digital Repository Queen Charlotte ENVELOPE(-132.088,-132.088,53.255,53.255) Langara Island ENVELOPE(-133.021,-133.021,54.235,54.235) |
institution |
Open Polar |
collection |
PRISM - University of Calgary Digital Repository |
op_collection_id |
ftunivcalgary |
language |
English |
topic |
QL 696 A2 N44 1970 Peregrine falcon Birds - Behavior |
spellingShingle |
QL 696 A2 N44 1970 Peregrine falcon Birds - Behavior Nelson, Robert Wayne Some aspects of the breeding behaviour of Peregrine falcons on Langara Island, B.C. |
topic_facet |
QL 696 A2 N44 1970 Peregrine falcon Birds - Behavior |
description |
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 food from the male to the female were first observed almost a month prior to egg-laying. Food-transfers are similar to those seen between adults and fledglings. During parts of courtship, the female exhibits nestling-like behaviour. The significance of markedly lethargic behaviour in the female prior to the laying of the eggs is discussed. During incubation, the majority of hunting is done by the male in twilight before dawn. During the daylight hours he retrieves food for himself and the female from caches on the cliff. Only the female incubates at night. Although the male plays a role in daytime incubation, the amount of time that he devotes to this is small. This is thought to be partly explained by his inability (due to his smaller size) to brood nestlings effectively. The female broods the nestlings for about a week after hatching, but continues to brood them at night for some time longer. When the nestlings become too large for this, the female continues a nightly 'guard duty' ... |
author2 |
Myres, M. Timothy |
format |
Master Thesis |
author |
Nelson, Robert Wayne |
author_facet |
Nelson, Robert Wayne |
author_sort |
Nelson, Robert Wayne |
title |
Some aspects of the breeding behaviour of Peregrine falcons on Langara Island, B.C. |
title_short |
Some aspects of the breeding behaviour of Peregrine falcons on Langara Island, B.C. |
title_full |
Some aspects of the breeding behaviour of Peregrine falcons on Langara Island, B.C. |
title_fullStr |
Some aspects of the breeding behaviour of Peregrine falcons on Langara Island, B.C. |
title_full_unstemmed |
Some aspects of the breeding behaviour of Peregrine falcons on Langara Island, B.C. |
title_sort |
some aspects of the breeding behaviour of peregrine falcons on langara island, b.c. |
publisher |
University of Calgary |
publishDate |
1970 |
url |
http://hdl.handle.net/1880/13156 https://doi.org/10.11575/PRISM/19920 |
op_coverage |
200000254 |
long_lat |
ENVELOPE(-132.088,-132.088,53.255,53.255) ENVELOPE(-133.021,-133.021,54.235,54.235) |
geographic |
Queen Charlotte Langara Island |
geographic_facet |
Queen Charlotte Langara Island |
genre |
peregrine falcon |
genre_facet |
peregrine falcon |
op_relation |
82481542 Nelson, R. W. (1970). Some aspects of the breeding behaviour of Peregrine falcons on Langara Island, B.C. (Unpublished master's thesis). University of Calgary, Calgary, AB. doi:10.11575/PRISM/19920 http://dx.doi.org/10.11575/PRISM/19920 QL 696 A2 N44 1970 http://hdl.handle.net/1880/13156 |
op_rights |
University of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission. |
op_doi |
https://doi.org/10.11575/PRISM/19920 |
_version_ |
1775354261407793152 |