Seasonal Changes in Atmospheric Noise Levels and the Annual Variation in Pigeon Homing Performance
Repeated releases of experienced homing pigeons from single sites were conducted between 1972 and 1974 near Cornell University in upstate New York and between 1982 and 1983 near the University of Pittsburgh in western Pennsylvania, USA. No annual variation in homing performance was observed at these...
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ftunivdenverir:oai:digitalcommons.du.edu:biological_sciences_faculty-1009 2023-05-15T17:33:12+02:00 Seasonal Changes in Atmospheric Noise Levels and the Annual Variation in Pigeon Homing Performance Hagstrum, Jonathan T. McIsaac, Hugh P. Drob, Douglas P. 2016-05-04T07:00:00Z https://digitalcommons.du.edu/biological_sciences_faculty/5 unknown Digital Commons @ DU https://digitalcommons.du.edu/biological_sciences_faculty/5 Biological Sciences: Faculty Scholarship Avian navigation Infrasound Microbaroms Tornadoes Hurricanes College of Natual Science and Mathematics Biological Sciences Biology Life Sciences text 2016 ftunivdenverir 2022-10-02T08:34:06Z Repeated releases of experienced homing pigeons from single sites were conducted between 1972 and 1974 near Cornell University in upstate New York and between 1982 and 1983 near the University of Pittsburgh in western Pennsylvania, USA. No annual variation in homing performance was observed at these sites in eastern North America, in contrast to results from a number of similar experiments in Europe. Assuming pigeons home using low-frequency infrasonic signals (~0.1–0.3 Hz), as has been previously proposed, the annual and geographic variability in homing performance within the northern hemisphere might be explained, to a first order, by seasonal changes in low-frequency atmospheric background noise levels related to storm activity in the North Atlantic Ocean, and by acoustic waveguides formed between the surface and seasonally reversing stratospheric winds. In addition, increased dispersion among departure bearings of test birds on some North American release days was possibly caused by infrasonic noise from severe weather events during tornado and Atlantic hurricane seasons. Text North Atlantic University of Denver: Digital Commons @ DU |
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Open Polar |
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University of Denver: Digital Commons @ DU |
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ftunivdenverir |
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unknown |
topic |
Avian navigation Infrasound Microbaroms Tornadoes Hurricanes College of Natual Science and Mathematics Biological Sciences Biology Life Sciences |
spellingShingle |
Avian navigation Infrasound Microbaroms Tornadoes Hurricanes College of Natual Science and Mathematics Biological Sciences Biology Life Sciences Hagstrum, Jonathan T. McIsaac, Hugh P. Drob, Douglas P. Seasonal Changes in Atmospheric Noise Levels and the Annual Variation in Pigeon Homing Performance |
topic_facet |
Avian navigation Infrasound Microbaroms Tornadoes Hurricanes College of Natual Science and Mathematics Biological Sciences Biology Life Sciences |
description |
Repeated releases of experienced homing pigeons from single sites were conducted between 1972 and 1974 near Cornell University in upstate New York and between 1982 and 1983 near the University of Pittsburgh in western Pennsylvania, USA. No annual variation in homing performance was observed at these sites in eastern North America, in contrast to results from a number of similar experiments in Europe. Assuming pigeons home using low-frequency infrasonic signals (~0.1–0.3 Hz), as has been previously proposed, the annual and geographic variability in homing performance within the northern hemisphere might be explained, to a first order, by seasonal changes in low-frequency atmospheric background noise levels related to storm activity in the North Atlantic Ocean, and by acoustic waveguides formed between the surface and seasonally reversing stratospheric winds. In addition, increased dispersion among departure bearings of test birds on some North American release days was possibly caused by infrasonic noise from severe weather events during tornado and Atlantic hurricane seasons. |
format |
Text |
author |
Hagstrum, Jonathan T. McIsaac, Hugh P. Drob, Douglas P. |
author_facet |
Hagstrum, Jonathan T. McIsaac, Hugh P. Drob, Douglas P. |
author_sort |
Hagstrum, Jonathan T. |
title |
Seasonal Changes in Atmospheric Noise Levels and the Annual Variation in Pigeon Homing Performance |
title_short |
Seasonal Changes in Atmospheric Noise Levels and the Annual Variation in Pigeon Homing Performance |
title_full |
Seasonal Changes in Atmospheric Noise Levels and the Annual Variation in Pigeon Homing Performance |
title_fullStr |
Seasonal Changes in Atmospheric Noise Levels and the Annual Variation in Pigeon Homing Performance |
title_full_unstemmed |
Seasonal Changes in Atmospheric Noise Levels and the Annual Variation in Pigeon Homing Performance |
title_sort |
seasonal changes in atmospheric noise levels and the annual variation in pigeon homing performance |
publisher |
Digital Commons @ DU |
publishDate |
2016 |
url |
https://digitalcommons.du.edu/biological_sciences_faculty/5 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Biological Sciences: Faculty Scholarship |
op_relation |
https://digitalcommons.du.edu/biological_sciences_faculty/5 |
_version_ |
1766131630737457152 |