Changes in incubation sharing in one pair of captive California condors (<i>Gymnogyps californianus</i>)

Harvey, Nancy C.; Hartt, Ernest W; Leete, Allison J.; Preston, Kris

doi:10.1002/zoo.1430130207

Cited by 3 publications

(4 citation statements)

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“…Consistent with the results of Spoon et al [], we found that pairs of cockatiels that successfully hatched offspring exhibited lower levels of intrapair aggression prior to breeding and were better able to coordinate incubation behavior during breeding trials. Our results support the notion that pair behavioral compatibility is associated with improved reproductive success in captivity [Baltz, ; Harvey et al, ; Spoon et al, ].…”

Section: Discussionsupporting

confidence: 90%

“…Furthermore, those pairs that exhibited a combination of low aggression and high nest activity were more likely to produce surviving offspring [Baltz, ]. Similar effects have also been seen in force‐paired California condors in captivity ( Gymnogyps californianus ), in which pairs classified as incompatible based on behavioral observations were less able to coordinate parental care [Harvey et al, ]. Additionally pairs of cockatiels ( Nymphicus hollandicus ; a small, socially‐monogamous Australian parrot) that exhibited higher levels of behavioral compatibility prior to breeding were also better able to synchronize incubation behavior and hatched a greater proportion of fertile eggs than less compatible pairs when breeding in captivity [Spoon et al, ].…”

Section: Introductionmentioning

confidence: 94%

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Personality traits of pair members predict pair compatibility and reproductive success in a socially monogamous parrot breeding in captivity

Fox

Millam

2014

Zoo Biology

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While pair behavioral compatibility seems to be a determinant of reproductive success in at least some species of monogamous birds, the specific factors underlying among-pair variation in behavioral compatibility remain poorly understood. However, recent research on the relationship between personality traits and reproductive success in several species of socially monogamous birds suggests that the fit between mates' personality traits might play a role in determining behavioral compatibility. To test this hypothesis, we used ten pairs formed by free choice from a captive population of cockatiels (Nymphicus hollandicus) to investigate whether personality ratings could be used to predict pair compatibility and reproductive success in pairs breeding for the first time. We found that pairs that ultimately hatched eggs paired disassortatively for agreeableness (an aggregate measure of social style which measures birds' tendency to be aggressive vs. gentle, submissive, and tolerant of others' behavior), and, as predicted, showed lower intrapair aggression and better coordination during incubation. Conversely, unsuccessful pairs paired assortatively for agreeableness, showed higher levels of intrapair aggression, and showed poorer coordination during incubation. Our results suggest that personality measurements may provide a useful adjunct to other information currently used in selecting mates for birds breeding in captivity.

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Section: Discussionsupporting

confidence: 90%

Section: Introductionmentioning

confidence: 94%

Personality traits of pair members predict pair compatibility and reproductive success in a socially monogamous parrot breeding in captivity

Fox

Millam

2014

Zoo Biology

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“…com., our study) Andean Condors also indicate that males incubate, and may even forcibly displace females to incubate. Such behavior might be typical of New World vultures because male California Condors, Black Vultures, and Turkey Vultures also have important roles in incubating eggs and provisioning young (Coles 1944, Verner 1978, del Hoyo et al 1994, Harvey et al 1994).…”

Section: Discussionmentioning

confidence: 99%

Breeding behavior of a pair of free-living Andean Condors

Lambertucci

Mastrantuoni

2008

J Field Ornithology

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The breeding behavior of Andean Condors (Vultur gryphus) is known primarily from observations of captive pairs. This species is the only sexually dimorphic one in its family (Cathartidae), permitting comparison of the parental care provided by each sex. We examined the breeding behavior of a pair of condors over a period of 28 mo at a nest in Patagonia, Argentina. We first observed the pair near the nest site in January 2005. Courtship displays began in April and continued until October, when incubation started. The nestling hatched in early December 2005 and fledged in June 2006. The young condor first left the nest area 10 mo after hatching and was observed at the nest site for the last time 15 mo after hatching. Both adults incubated the egg and provisioned the nestling after hatching, and at least one adult was always present at the nest site for 2 mo post hatching. During the nesting period, the male visited the nest site more often, stayed for longer periods, interacted with the chick, and brought food more frequently than the female. Additional studies of the breeding biology of wild Andean Condors are needed to improve our understanding of their population ecology and demographics and to enhance conservation efforts.

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“…At this time, all remaining wild condors were brought into captivity for an extensive captive-breeding program [Stoms et al, 1993;Snyder and Snyder, 2000;Alagona, 2004]. Breeding facilities used a strategy called ''double clutching'' to produce as many California condors in captivity as possible [Snyder and Hamber, 1985;Harvey et al, 2003Harvey et al, , 2004Nielsen, 2006;]. Double clutching involved pulling the first egg of the season to induce the breeding pair to lay another egg.…”

Section: Introductionmentioning

confidence: 99%

The effects of rearing method on social behaviors of mentored, captive‐reared juvenile California condors

et al. 2007

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Puppet-reared and parent-reared captive-bred California condor (Gymnogyps californianus) juveniles were studied before their release into the wild. Behavioral data were collected during social interactions within two cohorts of juveniles (N = 11) and their adult mentors (N = 5). The purposes of this study were to (1) document the social behaviors of mentored juvenile California condors, and (2) compare social behaviors for two different rearing methods (puppet-reared versus parent-reared) during two phases of the mentoring process (San Diego Wild Animal Park versus release sites). Of the 17 behaviors examined by 2 x 2 analyses of variance (ANOVAs), two significant interactions between the rearing method and mentoring phase were found: pulls feathers and feeds alone. For both behaviors, parent-reared condors engaged in these activities more often at the zoo and less often at the release pens than did the puppet-reared condors. The main effect of rearing was also significant for two behaviors: near others, and receives contact aggression from other. Parent-reared birds were more likely to be near another bird and receive contact aggression, regardless of mentoring phase, than puppet-reared birds. The effect size for 16 of the 17 behaviors was greater for the rearing method than for mentoring phase. Rearing method differences may persist long-term, as parent-reared adult mentors were significantly more aggressive than puppet-reared adult mentors. Dominance relations were examined for both cohorts, with the first cohort exhibiting a strong linear relationship (h' = 0.86, P = 0.018), whereas the second cohort exhibited a moderate but non-significant linear hierarchy (h' = 0.63, P = 0.21). The rearing method had no effect on dominance among the juveniles, but adults were probably dominant to juveniles (P = 0.052; the difference was nearly significant). Although social behaviors between the two rearing groups were similar in most respects, this study is the first to document measurable differences between puppet- and parent-reared captive-bred California condor juveniles. Zoo Biol 27:1-18, 2008. (c) 2007 Wiley-Liss, Inc.

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Changes in incubation sharing in one pair of captive California condors (Gymnogyps californianus)

Cited by 3 publications

References 7 publications

Personality traits of pair members predict pair compatibility and reproductive success in a socially monogamous parrot breeding in captivity

Personality traits of pair members predict pair compatibility and reproductive success in a socially monogamous parrot breeding in captivity

Breeding behavior of a pair of free-living Andean Condors

The effects of rearing method on social behaviors of mentored, captive‐reared juvenile California condors

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