Causes, consequences and mechanisms of breeding dispersal in the colonial lesser kestrel, Falco naumanni

Calabuig, Gustau; Ortego, Joaquín; Cordero, Pedro J.; Aparicio, José Miguel

doi:10.1016/j.anbehav.2008.08.019

Cited by 40 publications

(33 citation statements)

References 43 publications

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“…Male birds are indeed the most active sex in both resource and territory defense and hence benefit more from being familiar with their natal surrounding (Clarke et al ). Shift in breeding site can also be related to local ecological conditions, such as spatial variation in food abundance (Korpimäki ), intra‐specific competition for breeding vacancies (Nevoux et al ), or predation risk (Calabuig et al ).…”

mentioning

confidence: 99%

Mechanisms and reproductive consequences of breeding dispersal in a specialist predator under temporally varying food conditions

Terraube

Vasko

Korpimäki

2014

Oikos

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Individual variation in breeding dispersal has extensive ecological and evolutionary consequences, but the factors driving individual dispersal behaviour and their fi tness consequences remain poorly understood. Our data on dispersal events of a rodent-specialist predator, the Eurasian kestrel Falco tinnunculus , over 20 years in western Finland off ers a unique opportunity to explore the mechanisms underlying breeding dispersal behaviour and its reproductive consequences in a wild bird population. Sex, age, body condition and previous breeding success aff ected breeding dispersal. Dispersal distances were longer in females than in males as well as longer in yearlings than in older individuals. Body condition was positively correlated to breeding dispersal distances, particularly for females. Th e lowest dispersal distances were recorded for intermediate brood sizes in the year preceding dispersal. Our results highlight sex-and environment-specifi c consequences of breeding dispersal on reproductive performance. During increase phases of the three-year vole cycles, males dispersing further had lower reproductive performance after dispersal, whereas in females, long breeding dispersal distances were associated with increased breeding success under all environmental conditions. Th ese results suggest benefi ts associated to breeding dispersal in females, potentially related to large spatio-temporal variation in main food abundance and intensity of intra-specifi c competition. Breeding dispersal of males was costly during increasing food abundance, indicating the potential fi tness benefi ts of environmental familiarity in this migratory species. Overall, our results indicate that both individual traits and environmental factors interact to shape breeding dispersal strategies in wide-ranging predator populations under fl uctuating food conditions.

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confidence: 99%

Mechanisms and reproductive consequences of breeding dispersal in a specialist predator under temporally varying food conditions

Terraube

Vasko

Korpimäki

2014

Oikos

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“…However, the exact relationship between breeding density and breeding dispersal is all but clear, often appearing to be highly species-and contextdependent. For example, breeding dispersal may decrease with increasing colony size, matching the expected fitness returns (Serrano et al 2001; but see Calabuig et al 2008), whereas in other species, breeding dispersal occurs from high density to low density (Aars and Ims 2000). Contrasting with the above situations, the highest breeding site fidelity may occur at intermediate densities in colonial seabirds (Kim et al 2009), and yet other studies have found that breeding dispersal is density independent (Forero et al 1999;Newton 2001).…”

Section: Introductionmentioning

confidence: 87%

“…While some studies have found that dispersing may improve subsequent breeding success (Hepp and Kennamer 1992;Forero et al 1999;Newton 2001;Calabuig et al 2008), negative results are more prevalent (Clark and Shutler 1999;Danchin and Cam 2002;Shutler and Clark 2003;Schaub and von Hirschheydt 2009). This leaves us with an apparent paradox: while we inherently assume that breeding dispersal is adaptive, it is often difficult to ascribe an adaptive function to the behaviour (Clark and Shutler 1999).…”

Section: Introductionmentioning

confidence: 88%

Causes and consequences of fine-scale breeding dispersal in a female-philopatric species

et al. 2010

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The potentially confounded effects of factors affecting breeding dispersal have rarely been simultaneously examined. The consequences of breeding dispersal are even less studied, presenting a paradox: breeding dispersal seldom seems to improve breeding success, despite its presumed adaptiveness. We studied the causes and consequences of breeding dispersal in female-philopatric eiders (Somateria mollissima) in relation to the spatiotemporal predictability of nest success. Previous nest fate, breeding experience, and breeding density simultaneously affected breeding dispersal. Dispersal distances were longer among inexperienced breeders and after failed breeding. Individual dispersal distances decreased with increasing nest-site-specific breeding density, whereas island-specific nesting success peaked at intermediate densities. The fate of neighbouring nests ('public information') did not influence dispersal. Breeding dispersal was unrelated to subsequent hatching success, controlling for individual quality (body condition, breeding experience, previous nest fate), while it delayed hatch date, which is likely to impair reproductive success. This delay may result from the loss of acquired information of local breeding conditions, prolonging nest prospecting and establishment, also helping explain why breeding dispersal did not increase at high breeding densities, despite a potential reduction in nesting success. In long-lived species, however, dispersal-induced reductions in reproductive output in one season could be offset by improved parental survival prospects. Careful nest prospecting may be profitable, because overall nest success had a strong island-specific component but showed weak temporal variation, and successive individual nest fates were predictable between years. Once a safe nest site is found, females may breed at the same place successfully for many years.

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“…Juveniles that dispersed did so on long distances, while adults showed much higher fidelity on their breeding grounds. There is evidence that the probability of dispersal decreases with age (Serrano et al 2001, Calabuig et al 2008 while such long distance dispersal movements exist but could be underestimated (Prugnolle et al 2003). A reason for that could be that estimating philopatry rates from ringing recovery data has its drawbacks since ringing intensity varies with locations and longdistance dispersal movements of individuals could be difficult to detect.…”

Section: Philopatrymentioning

confidence: 99%

The Migration of the Lesser Kestrel Falco naumanni in Eastern Europe - A Ringing Recovery and Direct Observation Approach

Bounas

Panuccio²,

Evangelidis³

et al. 2016

Acrocephalus

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We examined ringing recovery data of the Lesser Kestrel Falco naumanni in order to analyse its migration patterns and philopatry rates in Eastern Europe. In addition, we extracted counts of migrating birds from online databases and studied the use of the flyway as well as the phenology of both spring and autumn migrations through Greece. Birds appeared to migrate in the same mean direction in spring and autumn through the Italian and Balkan Peninsulas. During spring, movements took place on a broad front from March until mid- May with a peak in mid-April; in autumn, birds migrated through Greece on a narrower front from early August to early October, with most of individuals passing through Greece in mid-September. Finally, philopatry rates were higher for adults, while juvenile birds dispersed more often and at longer distances, up to 974 km away. Our results on migration patterns generally agree with those in other studies, but we found some evidence of long-distance premigratory movements towards mainland Greece that could also shape the narrower front migration in autumn. In addition, long distance dispersal movements of juveniles in southeastern Europe, where Lesser Kestrel populations show a fragmented distribution, could facilitate gene flow between populations, thus avoiding the negative effects of mating with genetically similar individuals.

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Causes, consequences and mechanisms of breeding dispersal in the colonial lesser kestrel, Falco naumanni

Cited by 40 publications

References 43 publications

Mechanisms and reproductive consequences of breeding dispersal in a specialist predator under temporally varying food conditions

Mechanisms and reproductive consequences of breeding dispersal in a specialist predator under temporally varying food conditions

Causes and consequences of fine-scale breeding dispersal in a female-philopatric species

The Migration of the Lesser Kestrel Falco naumanni in Eastern Europe - A Ringing Recovery and Direct Observation Approach

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