Relationship Between the North Atlantic Oscillation and spring migration phenology of Broad-Winged Hawks (Buteo platypterus) at Hawk Mountain Sanctuary, 1998-2013
Climatic factors influence migration behavior in both short- and long-distance migratory birds. The Broad-winged Hawk (Buteo platypterus) is a long-distance migrant that exhibits a regular calendar-like migration pattern, with some interannual variability during both the northbound and southbound mi...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Raptor Research Foundation, Inc.
2015
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| Online Access: | http://psasir.upm.edu.my/id/eprint/46136/ http://psasir.upm.edu.my/id/eprint/46136/1/Relationship%20between%20the%20North%20Atlantic%20Oscillation%20.pdf |
| _version_ | 1848850601867214848 |
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| author | Kim, Hankyu Vega, Marta Sendra Wahl, Marian Puan, Chong Leong Goodrich, Laurie Bildstein, Keith L. |
| author_facet | Kim, Hankyu Vega, Marta Sendra Wahl, Marian Puan, Chong Leong Goodrich, Laurie Bildstein, Keith L. |
| author_sort | Kim, Hankyu |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Climatic factors influence migration behavior in both short- and long-distance migratory birds. The Broad-winged Hawk (Buteo platypterus) is a long-distance migrant that exhibits a regular calendar-like migration pattern, with some interannual variability during both the northbound and southbound migrations. We examined the relationship between the North Atlantic Oscillation (NAO) and the timing of spring migration in Broad-winged Hawks based on standardized migration count data collected at Hawk Mountain Sanctuary from 1998 to 2013. A strong negative correlation was found between a higher April NAO index and earlier passage dates for the first 50% (r 5 20.723, P , 0.01) and 95% (r 5 20.565, P 5 0.02) and mean passage date (r 5 20.730, P , 0.01) of the hawks passing the watchsite. The April NAO values may serve as a useful indicator of the conditions encountered by Broad-winged Hawks during their northbound migration and our analyses suggest a possible climatic effect on their migration timing, as measured at the migration watchsites in the northeastern United States. |
| first_indexed | 2025-11-15T10:08:53Z |
| format | Article |
| id | upm-46136 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T10:08:53Z |
| publishDate | 2015 |
| publisher | Raptor Research Foundation, Inc. |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-461362022-03-23T03:47:56Z http://psasir.upm.edu.my/id/eprint/46136/ Relationship Between the North Atlantic Oscillation and spring migration phenology of Broad-Winged Hawks (Buteo platypterus) at Hawk Mountain Sanctuary, 1998-2013 Kim, Hankyu Vega, Marta Sendra Wahl, Marian Puan, Chong Leong Goodrich, Laurie Bildstein, Keith L. Climatic factors influence migration behavior in both short- and long-distance migratory birds. The Broad-winged Hawk (Buteo platypterus) is a long-distance migrant that exhibits a regular calendar-like migration pattern, with some interannual variability during both the northbound and southbound migrations. We examined the relationship between the North Atlantic Oscillation (NAO) and the timing of spring migration in Broad-winged Hawks based on standardized migration count data collected at Hawk Mountain Sanctuary from 1998 to 2013. A strong negative correlation was found between a higher April NAO index and earlier passage dates for the first 50% (r 5 20.723, P , 0.01) and 95% (r 5 20.565, P 5 0.02) and mean passage date (r 5 20.730, P , 0.01) of the hawks passing the watchsite. The April NAO values may serve as a useful indicator of the conditions encountered by Broad-winged Hawks during their northbound migration and our analyses suggest a possible climatic effect on their migration timing, as measured at the migration watchsites in the northeastern United States. Raptor Research Foundation, Inc. 2015 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/46136/1/Relationship%20between%20the%20North%20Atlantic%20Oscillation%20.pdf Kim, Hankyu and Vega, Marta Sendra and Wahl, Marian and Puan, Chong Leong and Goodrich, Laurie and Bildstein, Keith L. (2015) Relationship Between the North Atlantic Oscillation and spring migration phenology of Broad-Winged Hawks (Buteo platypterus) at Hawk Mountain Sanctuary, 1998-2013. Journal of Raptor Research, 49 (4). pp. 471-478. ISSN 0892-1016; ESSN: 2162-4569 https://bioone.org/journals/journal-of-raptor-research/volume-49/issue-4/rapt-49-04-471-478.1/Relationship-Between-the-North-Atlantic-Oscillation-and-Spring-Migration-Phenology/10.3356/rapt-49-04-471-478.1.full 10.3356/rapt-49-04-471-478.1 |
| spellingShingle | Kim, Hankyu Vega, Marta Sendra Wahl, Marian Puan, Chong Leong Goodrich, Laurie Bildstein, Keith L. Relationship Between the North Atlantic Oscillation and spring migration phenology of Broad-Winged Hawks (Buteo platypterus) at Hawk Mountain Sanctuary, 1998-2013 |
| title | Relationship Between the North Atlantic Oscillation and spring migration phenology of Broad-Winged Hawks (Buteo platypterus) at Hawk Mountain Sanctuary, 1998-2013 |
| title_full | Relationship Between the North Atlantic Oscillation and spring migration phenology of Broad-Winged Hawks (Buteo platypterus) at Hawk Mountain Sanctuary, 1998-2013 |
| title_fullStr | Relationship Between the North Atlantic Oscillation and spring migration phenology of Broad-Winged Hawks (Buteo platypterus) at Hawk Mountain Sanctuary, 1998-2013 |
| title_full_unstemmed | Relationship Between the North Atlantic Oscillation and spring migration phenology of Broad-Winged Hawks (Buteo platypterus) at Hawk Mountain Sanctuary, 1998-2013 |
| title_short | Relationship Between the North Atlantic Oscillation and spring migration phenology of Broad-Winged Hawks (Buteo platypterus) at Hawk Mountain Sanctuary, 1998-2013 |
| title_sort | relationship between the north atlantic oscillation and spring migration phenology of broad-winged hawks (buteo platypterus) at hawk mountain sanctuary, 1998-2013 |
| url | http://psasir.upm.edu.my/id/eprint/46136/ http://psasir.upm.edu.my/id/eprint/46136/ http://psasir.upm.edu.my/id/eprint/46136/ http://psasir.upm.edu.my/id/eprint/46136/1/Relationship%20between%20the%20North%20Atlantic%20Oscillation%20.pdf |