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020 ▼a 9781088378526
035 ▼a (MiAaPQ)AAI22615431
040 ▼a MiAaPQ ▼c MiAaPQ ▼d 247004
0820 ▼a 574.5
1001 ▼a Niemasik, Esther Leah.
24510 ▼a Cooperative Breeding Helps Brown-Headed Nuthatches (Sitta pusilla) Face Heterospecific Competition.
260 ▼a [S.l.]: ▼b Cornell University., ▼c 2019.
260 1 ▼a Ann Arbor: ▼b ProQuest Dissertations & Theses, ▼c 2019.
300 ▼a 144 p.
500 ▼a Source: Dissertations Abstracts International, Volume: 81-04, Section: B.
500 ▼a Advisor: Dickinson, Janis L.
5021 ▼a Thesis (Ph.D.)--Cornell University, 2019.
506 ▼a This item must not be sold to any third party vendors.
520 ▼a My dissertation research tests the previously untested idea that heterospecific competition functions as an important selective force on group size in cooperatively breeding birds, using experimental approaches with the Brown-headed nuthatch (BHNU) (Sitta pusilla). We know from prior work that the western bluebird, which is much larger, excludes nuthatches from nesting sites (Stanback 2011). I tested the following explicit hypotheses: Hypothesis 1: Inter-specific competition selects for increased group size (more individuals helping or co-breeding) in BHNU and may even be sufficient to select for helping. Hypothesis 2: BHNU groups collectively defend against nest competitors, and collectively monitor their nest sites to chase away intruders.I studied the effect of interspecific competition on the fitness consequences of cooperative breeding using an experimental design that involved creating high and low competition sites on golf courses. Half of each course was randomly assigned to the high and low heterospecific competition treatments
590 ▼a School code: 0058.
650 4 ▼a Behavioral sciences.
650 4 ▼a Ecology.
690 ▼a 0602
690 ▼a 0329
71020 ▼a Cornell University. ▼b Neurobiology and Behavior.
7730 ▼t Dissertations Abstracts International ▼g 81-04B.
773 ▼t Dissertation Abstract International
790 ▼a 0058
791 ▼a Ph.D.
792 ▼a 2019
793 ▼a English
85640 ▼u http://www.riss.kr/pdu/ddodLink.do?id=T15493299 ▼n KERIS ▼z 이 자료의 원문은 한국교육학술정보원에서 제공합니다.
980 ▼a 202002 ▼f 2020
990 ▼a ***1008102
991 ▼a E-BOOK