{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/112998"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/112998","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Understanding the diel activity patterns and determinants of abundance of the eastern whip-poor-will","abstract":"Made available in DSpace on 2022-01-12T21:45:29Z (GMT). No. of bitstreams: 2 SOUZA-COLE-THESIS-2021.pdf: 1817522 bytes, checksum: 7750bd89e488f50864a46a348287fda1 (MD5) LICENSE.txt: 4211 bytes, checksum: 2aa065f767c6132c154f17aa7c3bf85f (MD5) Previous issue date: 2021-07-08","abstract_html":"Made available in DSpace on 2022-01-12T21:45:29Z (GMT). No. of bitstreams: 2 SOUZA-COLE-THESIS-2021.pdf: 1817522 bytes, checksum: 7750bd89e488f50864a46a348287fda1 (MD5) LICENSE.txt: 4211 bytes, checksum: 2aa065f767c6132c154f17aa7c3bf85f (MD5) Previous issue date: 2021-07-08","abstract_has_math":false,"creators":["Souza-Cole, Ian Francis"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"M.S.","degree_level":"Thesis","degree_discipline":"Natural Res & Env Sciences","degree_department":null,"school":null,"contributors":["Ward, Michael P","Benson, Thomas J","Hoover, Jeffrey P"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2022,"date_issued":"2022-01-12T21:45:29Z","date_published":"2022-01-12T21:45:29Z","updated_at":"2026-07-22T22:24:52Z","subjects":["whip-poor-will","abundance","activity","behavior","landscape","diet"],"languages":["en"],"rights":["Copyright 2021 Ian Souza-Cole"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/112998","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Ward, Michael P","Benson, Thomas J","Hoover, Jeffrey P"]},{"key":"dc:creator","label":"Author","values":["Souza-Cole, Ian Francis"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2022-01-12T21:45:29Z","2021-07-08","2021-08"]},{"key":"dc:type","label":"Dc Type","values":["text","Thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Natural Res & Env Sciences"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["M.S."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["whip-poor-will","abundance","activity","behavior","landscape","diet"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2021 Ian Souza-Cole"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/112998"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Made available in DSpace on 2022-01-12T21:45:29Z (GMT). No. of bitstreams: 2 SOUZA-COLE-THESIS-2021.pdf: 1817522 bytes, checksum: 7750bd89e488f50864a46a348287fda1 (MD5) LICENSE.txt: 4211 bytes, checksum: 2aa065f767c6132c154f17aa7c3bf85f (MD5) Previous issue date: 2021-07-08","The eastern whip-poor-will (Antrostromus vociferus) is a species of nightjar, a group of aerially insectivorous birds that exhibit unique adaptations to take advantage of crepuscular and nocturnal periods when few other birds are principally active. Native to eastern North America, the whip-poor-will is also a species of conservation concern, having experienced population declines across much of its range. I investigated eastern whip-poor-wills to better understand the constraints placed on them by their crepuscular and nocturnal habits and the degree to which they match their activity to the lunar cycle. To do this, I tagged 43 adult birds with VHF transmitters in 2019 and 2020 and monitored them using an automated radio telemetry system to quantify their rates of activity. I found that both male and female whip-poor-wills increase their rates of activity when there is more moonlight available at night. I also found that whip-poor-wills were much less active than diurnal birds over the course of a 24-hour period. Furthermore, I found some evidence to suggest that chicks were more likely to survive if their pre-fledging period coincided with nights of greater moonlight availability. I also researched the role of land-cover characteristics and food availability as determinants of whip-poor-will distribution by estimating their abundance at twenty-three sites across central Illinois. I conducted nocturnal point counts to estimate abundance in 2019 and 2020. I also collected nocturnal insects using UV-light traps at these sites to sample their food resources. Results of this analysis determined that the number of large moths has a positive effect on the abundance of whip-poor-wills whereas the proportion of the landscape covered by medium- to high-intensity human development had a negative effect. Taken as a whole, this research shows how whip-poor-wills may be susceptible to declines in their prey populations and this sensitivity may be exacerbated by the constrained temporal niche in which they operate.","Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-01-12 without embargo terms","The student, Ian Souza-Cole, accepted the attached license on 2021-07-08 at 10:02.","The student, Ian Souza-Cole, submitted this Thesis for approval on 2021-07-08 at 10:08.","This Thesis was approved for publication on 2021-07-08 at 15:14.","DSpace SAF Submission Ingestion Package generated from Vireo submission #16797 on 2022-01-12 at 12:44:24"]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Understanding the diel activity patterns and determinants of abundance of the eastern whip-poor-will"]}]}],"canonical_facts":{"dc:contributor":["Ward, Michael P","Benson, Thomas J","Hoover, Jeffrey P"],"dc:creator":["Souza-Cole, Ian Francis"],"dc:date":["2022-01-12T21:45:29Z","2021-07-08","2021-08"],"dc:description":["Made available in DSpace on 2022-01-12T21:45:29Z (GMT). No. of bitstreams: 2 SOUZA-COLE-THESIS-2021.pdf: 1817522 bytes, checksum: 7750bd89e488f50864a46a348287fda1 (MD5) LICENSE.txt: 4211 bytes, checksum: 2aa065f767c6132c154f17aa7c3bf85f (MD5) Previous issue date: 2021-07-08","The eastern whip-poor-will (Antrostromus vociferus) is a species of nightjar, a group of aerially insectivorous birds that exhibit unique adaptations to take advantage of crepuscular and nocturnal periods when few other birds are principally active. Native to eastern North America, the whip-poor-will is also a species of conservation concern, having experienced population declines across much of its range. I investigated eastern whip-poor-wills to better understand the constraints placed on them by their crepuscular and nocturnal habits and the degree to which they match their activity to the lunar cycle. To do this, I tagged 43 adult birds with VHF transmitters in 2019 and 2020 and monitored them using an automated radio telemetry system to quantify their rates of activity. I found that both male and female whip-poor-wills increase their rates of activity when there is more moonlight available at night. I also found that whip-poor-wills were much less active than diurnal birds over the course of a 24-hour period. Furthermore, I found some evidence to suggest that chicks were more likely to survive if their pre-fledging period coincided with nights of greater moonlight availability. I also researched the role of land-cover characteristics and food availability as determinants of whip-poor-will distribution by estimating their abundance at twenty-three sites across central Illinois. I conducted nocturnal point counts to estimate abundance in 2019 and 2020. I also collected nocturnal insects using UV-light traps at these sites to sample their food resources. Results of this analysis determined that the number of large moths has a positive effect on the abundance of whip-poor-wills whereas the proportion of the landscape covered by medium- to high-intensity human development had a negative effect. Taken as a whole, this research shows how whip-poor-wills may be susceptible to declines in their prey populations and this sensitivity may be exacerbated by the constrained temporal niche in which they operate.","Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-01-12 without embargo terms","The student, Ian Souza-Cole, accepted the attached license on 2021-07-08 at 10:02.","The student, Ian Souza-Cole, submitted this Thesis for approval on 2021-07-08 at 10:08.","This Thesis was approved for publication on 2021-07-08 at 15:14.","DSpace SAF Submission Ingestion Package generated from Vireo submission #16797 on 2022-01-12 at 12:44:24"],"dc:format":["application/pdf"],"dc:identifier":["http://hdl.handle.net/2142/112998"],"dc:language":["en"],"dc:rights":["Copyright 2021 Ian Souza-Cole"],"dc:subject":["whip-poor-will","abundance","activity","behavior","landscape","diet"],"dc:title":["Understanding the diel activity patterns and determinants of abundance of the eastern whip-poor-will"],"dc:type":["text","Thesis"],"thesis:degree_discipline":["Natural Res & Env Sciences"],"thesis:degree_level":["Thesis"],"thesis:degree_name":["M.S."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:24:52Z"}