Prospecting behavior and the influenceof forest cover on natal dispersal in aresident bird

Cox, Allison; Kesler, Dylan C.

doi:10.1093/beheco/ars076

Cited by 44 publications

(31 citation statements)

References 59 publications

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“…Indeed, dispersal decisions often appear to be informed and based on an evaluation of the current and potential future habitat (Clobert, Le Galliard, Cote, Meylan, & Massot, 2009). In many species, prospecting precedes dispersal and the information gained during prospecting forays influences dispersal decisions (Boulinier, McCoy, Yoccoz, Gasparini, & Tveraa, 2008;Cox & Kesler, 2012;Dittmann, Ezard, & Becker, 2007;P€ art & Doligez, 2003). In highly social animals, the current and future social environment are important determinants of an individual's chances of surviving and reproducing.…”

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confidence: 99%

“…Other potential benefits of such between-group visits have also been proposed, e.g. extragroup matings (Young, Spong, & Clutton-Brock, 2007) or the establishment of safe havens (Bergmüller, Heg, Peer, et al, 2005), besides their potential importance for dispersal (Bergmüller, Heg, Peer, et al, 2005;Cox & Kesler, 2012;Delgado et al, 2014;Doolan & Macdonald, 1996;Kesler & Haig, 2007). Thus, in many cooperative species, individuals appear to build familiarity networks outside their own group by visiting and interacting with foreign groups.…”

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confidence: 99%

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Prospecting precedes dispersal and increases survival chances in cooperatively breeding cichlids

2015

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confidence: 99%

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Prospecting precedes dispersal and increases survival chances in cooperatively breeding cichlids

2015

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“…We observed no mortalities during exploratory forays or after natal dispersal, even though we observed these behaviors 3-5 weeks after fledging in some birds (minimum age at beginning of forays = 22 days; minimum age at dispersal = 34 days; Cox and Kesler 2012). Dispersal has been characterized as a costly and risky behavior with inherently lower survival (Johnson and Gaines 1990, Daniels and Walters 2000, Stamps 2001).…”

Section: Discussionmentioning

confidence: 70%

Reevaluating the Cost of Natal Dispersal: Post-Fledging Survival of Red-bellied Woodpeckers

Cox

Kesler

2012

The Condor

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Accurate estimates of juvenile survival are critical to understanding population proceîses. However, information about post-fledging vital rates is lacking for most avian species because ofthe difficulty of following individuals after they leave the nest. We radio-tagged 43 Red-bellied Woodpeckers {Melanerpescarolinus) as nestlings. We tracked the birds for 5 months after fledging, during exploratory forays and after natal dispersal. We modeled the influence of intrinsic, temporal, social, and landscape factors with the potential to affect survival during the post-fledging period. Estimates of post-fledging survival were best explained by fledgling age. Predictions of weekly survival rates were 0.94 for birds 1 week after fledging, then quickly increased to over 0.99 for birds 7-22 weeks after fledging. We calculated period survival for the entire 5 months as 0.80 (95% CI: 0.65-0.90). We observed no mortalities after the birds departed natal territories, suggesting that exploratory and dispersal behaviors are not costly in this species. Reevaluando el Costo de la Dispersión Natal: Supervivencia Posterior al Emplumamiento en Melanerpes carolinusResumen. Los estimados precisos de la supervivencia juvenil son críticos para entender los procesos poblacionales. Sin embargo, falta información de tasas vitales posteriores al emplumamiento para la mayoria de las especies de aves debido a la dificultad de seguir a los individuos luego de que dejan el nido. Colocamos radio transmisores a 43 individuos de Melanerpes carolinus en el nido y seguimos a las aves por cinco meses posteriores al emplumamiento durante la dependencia de los volantones y las incursiones exploratorias y luego de la dispersión natal. Modelamos la influencia de factores intrinsecos, temporales, sociales y del paisaje con el potencial de afectar la supervivencia durante el periodo posterior al emplumamiento. Los estimados de la supervivencia posterior al emplumamiento fueron mejor explicados por la edad del volantón. Las predicciones de las tasas de supervivencia semanal fueron de 0.94 para las aves una semana después de emplumar y luego incrementaron rápidamente a más de 0.99 para aves de 7-22 semanas posteriores al emplumamiento. Calculamos la supervivencia del periodo para los cinco meses completos como de 0.80 (95% IC: 0.65-0.90). No observamos mortalidad luego de que las aves partieron de sus territorios natales, lo que sugiere que los comportamientos exploratorios y de dispersión no son costosos en esta especie.

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“…Each observed movement path was compared with 10 random movement paths that were simulated by rotating the track of points collected during each observation session around the territory center to a random orientation (e.g. Cox & Kesler, ). The randomly rotated tracks produced comparable paths with the same general shapes of travel and the same relationships between individual locations and territory centers (i.e.…”

Section: Methodsmentioning

confidence: 99%

Resource selection reflects fitness associations for an endangered bird in restored habitat

2015

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Conservation practitioners frequently have limited information on the structure and function of the ecosystems they wish to preserve, and as a result, they may use shortcuts to guide conservation actions. One such shortcut is the umbrella species approach, whereby conservation actions are geared toward one or a few key species, with the assumption that the entire community will benefit. However, fitness–habitat associations and resource use may vary across space and across management regimes, and so too may the utility of umbrella species as ecosystem surrogates. The federally endangered red‐cockaded woodpecker (Picoides borealis) has been used as an umbrella species in the restoration of the longleaf pine ecosystem of the southeastern US. Restoration efforts were based on early habitat selection information in largely degraded landscapes. We examined patterns of resource selection of 97 social groups of red‐cockaded woodpeckers in a restored landscape in northwest Florida. Similar to previous studies in degraded landscapes, woodpecker groups selected forest stands containing higher densities of large pines and lower densities of small pines for foraging. However, we found no evidence for another aspect of habitat selection widely documented in degraded habitat, the avoidance of areas with substantial components of hardwoods. These results align with new woodpecker fitness–habitat associations within restored landscapes and lend support to previous findings that current ecosystem restoration efforts in the study area, namely prescribed burning, may have reduced hardwood densities to below those at which they have negative impacts. The red‐cockaded woodpecker has served as an effective umbrella species in degraded longleaf ecosystems by promoting management, especially prescribed burning, that benefits many other species. Whether it will continue to do so in restored habitat is not yet clear, but its tolerance of a range of hardwood conditions provides reason for optimism.

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Prospecting behavior and the influenceof forest cover on natal dispersal in aresident bird

Cited by 44 publications

References 59 publications

Prospecting precedes dispersal and increases survival chances in cooperatively breeding cichlids

Prospecting precedes dispersal and increases survival chances in cooperatively breeding cichlids

Reevaluating the Cost of Natal Dispersal: Post-Fledging Survival of Red-bellied Woodpeckers

Resource selection reflects fitness associations for an endangered bird in restored habitat

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