Table 3 Phenotypic (<i>V</i><sub>P</sub>), environmental (<i>V</i><sub>E</sub>) and additive genetic (<i>V</i><sub>A</sub>) components of variation, the additive genetic coefficient of variation (<i>CV</i><sub>A</sub>), the phenotypic coefficient of variation (<i>CV</i><sub>P</sub>), and the heritability (<i>h</i><sup><i>2</i></sup>) for morphology and immune response variables in nestling house martins