@article{fdi:010086996, title = {{N}atal colony influences age-specific movement patterns of the {Y}ellow-legged gull ({L}arus michahellis)}, author = {{S}ouc, {C}. and {S}adoul, {N}. and {B}lanchon, {T}. and {V}ittecoq, {M}. and {P}in, {C}. and {V}idal, {E}ric and {M}ante, {A}. and {C}hoquet, {R}. and {M}c{C}oy, {K}. {D}.}, editor = {}, language = {{ENG}}, abstract = {{B}ackground {A}s for other life history traits, variation occurs in movement patterns with important impacts on population demography and community interactions. {I}ndividuals can show variation in the extent of seasonal movement (or migration) or can change migratory routes among years. {I}nternal factors, such as age or body condition, may strongly influence changes in movement patterns. {I}ndeed, young individuals often tend to move across larger spatial scales compared to adults, but relatively few studies have investigated the proximate and ultimate factors driving such variation. {T}his is particularly the case for seabirds in which the sub-adult period is long and difficult to follow. {H}ere, we examine migration variation and the factors that affect it in a common {M}editerranean seabird, the {Y}ellow-legged gull ({L}arus michahellis). {M}ethods {T}he data include the encounter histories of 5158 birds marked as fledglings between 1999 and 2004 at 14 different colonies in southern {F}rance and resighted over 10 years. {U}sing a multi-event mark-recapture modeling framework, we use these data to estimate the probability of movement and survival, taking into account recapture heterogeneity and age. {R}esults {I}n accordance with previous studies, we find that young individuals have greater mobility than older individuals. {H}owever, the spatial extent of juvenile movements depends on natal colony location, with a strong difference in the proportion of sedentary individuals among colonies less than 50 km apart. {C}olony quality or local population dynamics may explain these differences. {I}ndeed, young birds from colonies with strong juvenile survival probabilities (similar to 0.75) appear to be more sedentary than those from colonies with low survival probabilities (similar to 0.36). {C}onclusions {T}his study shows the importance of studying individuals of different ages and from different colonies when trying to understand seabird movement strategies. {L}ocal breeding success and the availability of food resources may explain part of the among colony differences we observe and require explicit testing. {W}e discuss our results with respect to the feedback loop that may occur between breeding success and mobility, and its potential implications for population demography and the dissemination of avian disease at different spatial scales.}, keywords = {{C}apture heterogeneity ; {C}olonial seabirds ; {D}emography ; {D}ispersal ; {E}nvironmental quality ; {M}igration ; {M}ultisite mark-recapture ; {P}rospection ; {S}urvival ; {EUROPE}}, booktitle = {}, journal = {{M}ovement {E}cology}, volume = {11}, numero = {1}, pages = {11 [12 ]}, ISSN = {2051-3933}, year = {2023}, DOI = {10.1186/s40462-023-00375-4}, URL = {https://www.documentation.ird.fr/hor/fdi:010086996}, }