Apparent Polygynous Nesting by Burrowing Owls

Barclay, John H.; Menzel, Sandra

doi:10.3356/jrr-10-50.1

Cited by 1 publication

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“…Burrowing owls are described as predominantly monogamous and occasionally polygynous (Haug 1993, Barclay andMenzel 2011), and some offspring may result from extra-pair fertilization (Johnson 1997). From year to year, though, pair bonds are not necessarily permanent with different rates of pair fidelity at different locations (Thomson 1971, Martin 1973, Millsap and Bear 1990).…”

Section: Nest-site Fidelity and Natal Philopatrymentioning

confidence: 99%

An Assessment of Artificial Burrows for Burrowing Owls in Northern California

Menzel

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AN ASSESSMENT OF ARTIFICIAL BURROWS FOR BURROWING OWLS IN NORTHERN CALIFORNIA by Sandra Menzel This study assesses artificial burrows as a management tool for burrowing owls (Athene cunicularia) at two study sites in northern California. The results of t-tests showed that artificial burrows that received annual surface maintenance (n = 113) at one site were occupied for a significantly (p ≤ 0.003) greater number of years than non-maintained (n = 51) artificial burrows at the other site. Maintained burrows were occupied for a mean of 1.90 years (SD = 2.04), compared to a mean of 0.45 years (SD = 0.97) for non-maintained burrows. Even with maintenance, occupancy rates dropped from 31% during the first year to 8% during the third year post-installation. Maintenance or reinstallation of the entire burrow system appears to be crucial for longer-term use. The results of chi-squared goodness-of-fit tests showed no significant difference in nesting success (≥ 1 fledgling/pair) between natural and artificial burrows at either of the study sites (χ 2 = 2.75 and 6.76, df = 3, p > 0.05). Of 120 burrowing owls raised in maintained artificial burrows, 70% were re-sighted occupying artificial burrows during subsequent breeding seasons, compared to 30% occupying natural burrows. Only 3% of these owls occupied their natal burrow during the first nesting season post-fledging. Of those owls that were re-sighted during two or more nesting seasons, almost half

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Section: Nest-site Fidelity and Natal Philopatrymentioning

confidence: 99%

An Assessment of Artificial Burrows for Burrowing Owls in Northern California

Menzel

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Apparent Polygynous Nesting by Burrowing Owls

Cited by 1 publication

References 4 publications

An Assessment of Artificial Burrows for Burrowing Owls in Northern California

An Assessment of Artificial Burrows for Burrowing Owls in Northern California

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