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Reproductive ecology of the island scrub-jay (Aphelocoma insularis)

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dc.contributor.authorCaldwell, Luke, author
dc.contributor.authorAngeloni, Lisa M., advisor
dc.contributor.authorSillett, T. Scott, committee member
dc.contributor.authorSavidge, Julie A., committee member
dc.coverage.spatialSanta Cruz Island (Calif.)
dc.coverage.spatialCalifornia
dc.date.accessioned2007-01-03T04:55:16Z
dc.date.available2007-01-03T04:55:16Z
dc.date.issued2010
dc.description.abstractThe small population size and limited range of the Island Scrub-Jay make it a species of conservation concern, yet its reproductive ecology is poorly known. From 2008 - 2010 I investigated factors influencing nest success, quantified annual fecundity per pair, and documented breeding behavior. Nest predation was the major factor influencing nest success, accounting for 92 percent of documented nest failures. Nests that were initiated earlier in the breeding season, nests that were higher and more concealed, and nests of breeding pairs that had smaller home ranges had higher daily nest survival. Despite a low estimated daily nest survival rate of 0.945 ± 0.004 SE, the high frequency of renesting allowed pairs to maintain a mean fecundity of 1.13 ± 0.15 SE. Island Scrub-Jays may benefit from an increase in breeding habitat and lower nest predation from the ongoing regeneration of woody vegetation and understory structure following the removal of exotic herbivores on Santa Cruz Island.
dc.format.mediummasters theses
dc.identifier2010_Fall_Caldwell_Luke.pdf
dc.identifierETDF2010300034BIOL
dc.identifier.urihttp://hdl.handle.net/10217/45985
dc.languageEnglish
dc.language.isoeng
dc.publisherColorado State University. Libraries
dc.relation.ispartof2000-2019
dc.rightsCopyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright.
dc.subjectnest success
dc.subjectnest predation
dc.subjectisland scrub-jay
dc.subjecthabitat-specific fecundity
dc.subjectSanta Cruz Island
dc.subject.lcshIsland scrub jay -- California -- Santa Cruz Island -- Reproduction
dc.subject.lcshIsland scrub jay -- Ecology -- California -- Santa Cruz Island
dc.subject.lcshAphelocoma insularis
dc.titleReproductive ecology of the island scrub-jay (Aphelocoma insularis)
dc.typeText
dcterms.rights.dplaThis Item is protected by copyright and/or related rights (https://rightsstatements.org/vocab/InC/1.0/). You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).
thesis.degree.disciplineBiology
thesis.degree.grantorColorado State University
thesis.degree.levelMasters
thesis.degree.nameMaster of Science (M.S.)

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