Breeding dispersal of Eurasian Hoopoes (<i>Upupa epops</i>) within and between years in relation to reproductive success, sex, and age

Bötsch, Yves; Arlettaz, Raphaël; Schaub, Michael

doi:10.1525/auk.2012.11079

Cited by 19 publications

(19 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Furthermore, survival is positively correlated with annual number of raised fledglings (Bötsch et al . ), such that individuals that were double brooded had on average higher survival than single‐brooded individuals. Such positive relationships between reproduction and survival are rare and could indicate a seasonal matching between quality of the individual and quality of the habitat (Gunnarsson et al .…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Factors influencing double brooding in Eurasian Hoopoes Upupa epops

Hoffmann

Postma

Schaub

2014

Ibis

Self Cite

View full text Add to dashboard Cite

Double brooding may be a good strategy for short-lived species to maximize annual and lifetime reproductive success (ARS and LRS, respectively). Nevertheless, there is typically individual variation in the probability of producing a second clutch. Here we evaluate factors that influence the decision to double brood in the Eurasian Hoopoe Upupa epops. Analyses of an 11-year dataset showed that 36% of the females and 21% of the males produced a second clutch after successfully raising a first clutch. Double-brooded females had higher ARS (9.1 AE 1.9 fledglings; mean AE se) and LRS (0.93 AE 0.08 recruits) than single-brooded females (ARS: 4.5 AE 2.1 fledglings; LRS: 0.36 AE 0.03 recruits). This suggests that double brooding is adaptive in Hoopoes, and raises the question of why most individuals only produce one clutch per season. The probability of double brooding varied only slightly between years, suggesting that it is influenced by individual characteristics rather than by external, population-level environmental factors. In both sexes, the probability of double brooding increased with earlier timing of the first clutch, and the timing of reproduction was the most important factor influencing reproductive success. The latter is likely to be mediated by changes in resources during the season. The probability of double brooding also increased slightly with female age, due to differences in intrinsic quality among females rather than to a gain in experience. In contrast to many other studies, the probability of double brooding increased with an increasing number of fledglings from the first clutch, suggesting that it is a strategy of individuals of high quality. Taken together, we show that the individual quality of the breeder and the timing of their first clutches are key factors influencing the decision to double brood, and thereby that they are important determinants of reproductive performance in Eurasian Hoopoes.

show abstract

Section: Discussionmentioning

confidence: 99%

“…Second clutches are often laid at a different place from the first clutch, and within‐season breeding dispersal is thus common (Bötsch et al . ).…”

Section: Methodsmentioning

confidence: 97%

Factors influencing double brooding in Eurasian Hoopoes Upupa epops

Hoffmann

Postma

Schaub

2014

Ibis

Self Cite

View full text Add to dashboard Cite

show abstract

“…; Bötsch et al. ). Therefore, in population models estimating juvenile survival from known population parameters, an underestimation of adult year‐to‐year survival results in an overestimation of juvenile first‐year survival.…”

Section: Methodsmentioning

confidence: 96%

Equal nonbreeding period survival in adults and juveniles of a long‐distant migrant bird

Grüebler

Korner‐Nievergelt

Naef‐Daenzer

2014

Ecology and Evolution

View full text Add to dashboard Cite

In migrant birds, survival estimates for the different life-history stages between fledging and first breeding are scarce. First-year survival is shown to be strongly reduced compared with annual survival of adult birds. However, it remains unclear whether the main bottleneck in juvenile long-distant migrants occurs in the postfledging period within the breeding ranges or en route. Quantifying survival rates during different life-history stages and during different periods of the migration cycle is crucial to understand forces driving the evolution of optimal life histories in migrant birds. Here, we estimate survival rates of adult and juvenile barn swallows (Hirundo rusticaL.) in the breeding and nonbreeding areas using a population model integrating survival estimates in the breeding ranges based on a large radio-telemetry data set and published estimates of demographic parameters from large-scale population-monitoring projects across Switzerland. Input parameters included the country-wide population trend, annual productivity estimates of the double-brooded species, and year-to-year survival corrected for breeding dispersal. Juvenile survival in the 3-week postfledging period was low (S = 0.32; SE = 0.05), whereas in the rest of the annual cycle survival estimates of adults and juveniles were similarly high (S > 0.957). Thus, the postfledging period was the main survival bottleneck, revealing the striking result that nonbreeding period mortality (including migration) is not higher for juveniles than for adult birds. Therefore, focusing future research on sources of variation in postfledging mortality can provide new insights into determinants of population dynamics and life-history evolution of migrant birds.

show abstract

“…Breeding dispersal patterns of migratory birds are thought to be influenced by both intrinsic (e.g., sex and experience) and extrinsic (e.g., food availability and habitat quality) factors (Greenwood and Harvey 1982, Harvey et al 1984, Reed and Oring 1993, Haas 1998, Bötsch et al 2012. Females generally disperse longer distances than males, and breeding dispersal distance typically decreases with age and as breeding-habitat quality increases.…”

Section: Methodsmentioning

confidence: 99%