Extrapair copulations in western bluebirds ( Sialia mexicana ): female receptivity favors older males

2001 ◽  
Vol 50 (5) ◽  
pp. 423-429 ◽  
Author(s):  
Janis Dickinson
Keyword(s):  
Female Receptivity ◽  
Sialia Mexicana ◽  
Western Bluebirds ◽  
Older Males

LIFE-HISTORY VARIATION AND DEMOGRAPHY IN WESTERN BLUEBIRDS (SIALIA MEXICANA) IN OREGON

The Auk ◽  
2004 ◽  
Vol 121 (1) ◽  
pp. 118 ◽  
Author(s):  
Amber J. Keyser ◽  
Marilynne T. Keyser ◽  
Daniel E. L. Promislow
Keyword(s):  
Life History ◽  
Life History Variation ◽  
Sialia Mexicana ◽  
Western Bluebirds

Sex bias in parental care is associated with brood age and fledglings’ growth rate in Western Bluebirds Sialia mexicana

2020 ◽  
Author(s):  
Belgica Porras-Reyes ◽  
Sergio Ancona ◽  
Alejandro Ariel Ríos-Chelén ◽  
Amando Bautista ◽  
Bibiana Montoya
Keyword(s):  
Growth Rate ◽  
Parental Care ◽  
Sex Bias ◽  
Sialia Mexicana ◽  
Western Bluebirds

scholarly journals Sex ratio of Western Bluebirds ( Sialia mexicana ) is mediated by phenology and clutch size

Ibis ◽  
2021 ◽  
Author(s):  
Andrew W. Bartlow ◽  
Mark D. Jankowski ◽  
Charles D. Hathcock ◽  
Randall T. Ryti ◽  
Steven L. Reneau ◽  
...  
Keyword(s):  
Sex Ratio ◽  
Clutch Size ◽  
Sialia Mexicana ◽  
Western Bluebirds

scholarly journals Partitioning Risk Among Different Causes of Nest Failure

The Auk ◽  
2007 ◽  
Vol 124 (2) ◽  
pp. 432-443 ◽  
Author(s):  
Matthew A. Etterson ◽  
Laura R. Nagy ◽  
Tara Rodden Robinson
Keyword(s):  
Nest Predation ◽  
Classification Error ◽  
Nest Failure ◽  
Cavity Nesters ◽  
Estimated Parameters ◽  
Cavity Nesting ◽  
Sialia Mexicana ◽  
Adverse Weather ◽  
Western Bluebirds ◽  
Egg Failure

Abstract Nest predation and nest parasitism receive the most attention as causes of nest failure for North American songbirds. Yet for many populations, interspecific competition, adverse weather, abandonment, nestling starvation, and egg failure may also be significant causes of nest failure. Despite the long interest in differential failure, serious challenges remain in the estimation of separate probabilities of nest failure from different causes. Apparent rates of failure suffer from at least two sources of bias: heterogeneous ages at discovery and classification error. We developed maximum-likelihood estimators for cause-specific daily probabilities of nest failure. We further show how the estimators can be extended to include classification error, if known. Finally, we demonstrate a simple application to Loggerhead Shrikes (Lanius ludovicianus), Tree Swallows (Tachycineta bicolor), Violet-green Swallows (T. thalassina), and Western Bluebirds (Sialia mexicana). Daily probabilities of survival were lower for the Loggherhead Shrike (0.978 ± 0.004) than for any of the three cavity-nesting species (range: 0.989 ± 0.002 − 0.993 ± 0.001). Weather was an important cause of nest failure for Loggerhead Shrikes (0.15 ± 0.05 overall). Conversely, competition among secondary cavity-nesters was not an important contributor to nest failure (range: 2–5% of nest failures) for bluebirds or swallows. Our estimator differs from others by allowing multiple fates to be modeled as separately estimated parameters rather than as covariates to a single estimated failure probability. Thus, our estimator should be viewed as an important complement to existing methods. División del Riesgo Entre Diferentes Causas de Fracaso Durante la Nidificación

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