Jacob et al _ BMC _ Gland volume

Great tit uropygial gland and metadat

Jacob et al _ BMC _ Feather_bacterial_composition

ARISA data of feather bacterial communitie

Jacob et al _ BMC _ Feather_bacterial_densities

Densities of cultivable bacteria on feather

Jacob et al _ BMC _ Nest_bacterial_densities

Densities of cultivable bacteria in nest

Jacob et al _ BMC _ Nest_bacterial_composition

ARISA data for nest bacterial communitie

Data_oxi

Data on adult oxidative damage in relation to clutch siz

Data_eggcontent

Data on carotenoids, lysozymes and ovotransferrin in egg

Data_nestlings

Data on nestling growth, condition at fledging and immunit

Jacob et al _ BMC _ Gland composition

Data of chemical compounds contained in the grand (see Table S1 for identification