{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/46612"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/46612","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Habitat selection in restored grasslands: the role of social cues in the settlement of Grasshopper Sparrows","abstract":"Social cues are used by many species to locate and select breeding sites. The role of social information in attracting birds to newly restored habitats is management relevant, but largely unexplored. I investigated the effect of social cues in the settlement behavior of Grasshopper Sparrows (Ammodramus savannarum) in new habitats. I played conspecific vocalizations at newly created grasslands and compared settlement rates and breeding densities at those sites to control sites, without vocalizations. A subset of sites was monitored for two years with playbacks present in the first year, but not the second, to evaluate possible “carry over” attraction. The probability of newly restored grasslands being settled was similar in treatment and control sites; however, treatment sites had over twice the densities of Grasshopper Sparrows as control sites. Densities on the treatment sites remained high the following year without conspecific playbacks. Grasshopper Sparrows can locate breeding habitat without conspecifics, but the addition of social cues increases the number of individuals that settle at a site. Manipulation of social cues as a management tool has been useful in establishing populations previously extirpated and could be potentially useful in management of grassland species. For this reason, understanding how birds use social information when selecting a habitat can be valuable for conservation efforts.","abstract_html":"Social cues are used by many species to locate and select breeding sites. The role of social information in attracting birds to newly restored habitats is management relevant, but largely unexplored. I investigated the effect of social cues in the settlement behavior of Grasshopper Sparrows (Ammodramus savannarum) in new habitats. I played conspecific vocalizations at newly created grasslands and compared settlement rates and breeding densities at those sites to control sites, without vocalizations. A subset of sites was monitored for two years with playbacks present in the first year, but not the second, to evaluate possible “carry over” attraction. The probability of newly restored grasslands being settled was similar in treatment and control sites; however, treatment sites had over twice the densities of Grasshopper Sparrows as control sites. Densities on the treatment sites remained high the following year without conspecific playbacks. Grasshopper Sparrows can locate breeding habitat without conspecifics, but the addition of social cues increases the number of individuals that settle at a site. Manipulation of social cues as a management tool has been useful in establishing populations previously extirpated and could be potentially useful in management of grassland species. For this reason, understanding how birds use social information when selecting a habitat can be valuable for conservation efforts.","abstract_has_math":false,"creators":["Andrews, John"],"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.","Brawn, Jeffrey D."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2014,"date_issued":"2014-01-16T17:56:10Z","date_published":"2014-01-16T17:56:10Z","updated_at":"2026-07-22T22:25:36Z","subjects":["Habitat selection","social information","Grasshopper Sparrow"],"languages":["en"],"rights":["Copyright 2013 John Andrews"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/46612","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Ward, Michael P.","Brawn, Jeffrey D."]},{"key":"dc:creator","label":"Author","values":["Andrews, John"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2014-01-16T17:56:10Z","2013-12"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"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":["Habitat selection","social information","Grasshopper Sparrow"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2013 John Andrews"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/46612"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Social cues are used by many species to locate and select breeding sites. The role of social information in attracting birds to newly restored habitats is management relevant, but largely unexplored. I investigated the effect of social cues in the settlement behavior of Grasshopper Sparrows (Ammodramus savannarum) in new habitats. I played conspecific vocalizations at newly created grasslands and compared settlement rates and breeding densities at those sites to control sites, without vocalizations. A subset of sites was monitored for two years with playbacks present in the first year, but not the second, to evaluate possible “carry over” attraction. The probability of newly restored grasslands being settled was similar in treatment and control sites; however, treatment sites had over twice the densities of Grasshopper Sparrows as control sites. Densities on the treatment sites remained high the following year without conspecific playbacks. Grasshopper Sparrows can locate breeding habitat without conspecifics, but the addition of social cues increases the number of individuals that settle at a site. Manipulation of social cues as a management tool has been useful in establishing populations previously extirpated and could be potentially useful in management of grassland species. For this reason, understanding how birds use social information when selecting a habitat can be valuable for conservation efforts.","Item withdrawn by Mark Zulauf (zulauf@illinois.edu) on 2013-07-22T13:48:55Z Item was in collections: University of Illinois Theses & Dissertations (ID: 1) No. of bitstreams: 2 Andrews_John.docx: 491563 bytes, checksum: f65aef493602c0d89dac2813a1fdaee3 (MD5) Andrews_John.pdf: 783919 bytes, checksum: e3e7d7dd19e7bc0cffcd27f694adeb1a (MD5)","Made available in DSpace on 2014-01-16T17:56:10Z (GMT). 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I played conspecific vocalizations at newly created grasslands and compared settlement rates and breeding densities at those sites to control sites, without vocalizations. A subset of sites was monitored for two years with playbacks present in the first year, but not the second, to evaluate possible “carry over” attraction. The probability of newly restored grasslands being settled was similar in treatment and control sites; however, treatment sites had over twice the densities of Grasshopper Sparrows as control sites. Densities on the treatment sites remained high the following year without conspecific playbacks. Grasshopper Sparrows can locate breeding habitat without conspecifics, but the addition of social cues increases the number of individuals that settle at a site. Manipulation of social cues as a management tool has been useful in establishing populations previously extirpated and could be potentially useful in management of grassland species. 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