2021
DOI: 10.1093/ornithology/ukab031
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Variation in incubation length and hatching asynchrony in Eastern Kingbirds: Weather eclipses female effects

Abstract: Incubation length and hatching asynchrony are integral elements of the evolved reproductive strategies of birds. We examined intra- and interpopulation variation in both traits for Eastern Kingbird (Tyrannus tyrannus) populations from New York (NY), Kansas (KS), and Oregon (OR) and found that both incubation length and hatching asynchrony were not repeatable among females, after controlling for a repeatable trait, clutch size. Instead, incubation length and clutch size were influenced by ambient temperature an… Show more

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Cited by 7 publications
(2 citation statements)
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“…The incubation period for each known breeder was defined as the 24 consecutive days with the lowest total of average daily ODBA, while the individual was in Greenland as this is the likely minimum incubation period required to hatch a clutch [23]. A three day buffer on either side of the 24 day window was applied to represent uncertainty in the exact length of incubation due to individual variation in the duration required for a clutch to hatch [35]. All remaining days, while an individual was in Greenland, were designated as non-incubating (Fig.…”
Section: Incubation Classification Scheme (Fig 1)mentioning
confidence: 99%
“…The incubation period for each known breeder was defined as the 24 consecutive days with the lowest total of average daily ODBA, while the individual was in Greenland as this is the likely minimum incubation period required to hatch a clutch [23]. A three day buffer on either side of the 24 day window was applied to represent uncertainty in the exact length of incubation due to individual variation in the duration required for a clutch to hatch [35]. All remaining days, while an individual was in Greenland, were designated as non-incubating (Fig.…”
Section: Incubation Classification Scheme (Fig 1)mentioning
confidence: 99%
“…The incubation period for each known breeder was defined as the 24 consecutive days with the lowest total of average daily ODBA while the individual was in Greenland as this is the likely minimum incubation period required to hatch a clutch [23]. A three day buffer on either side of the 24 day window was applied to represent uncertainty in the exact length of incubation due to individual variation in the duration required for a clutch to hatch [34]. All remaining days, while an individual was in Greenland, were designated as non-incubating (Fig 2).…”
mentioning
confidence: 99%