Consequences of nest reuse for parasite burden and female health and condition in blue tits, Cyanistes caeruleusA simple trapping method to estimate abundances of blood-sucking flying insects in avian nestsCosts and benefits of early reproduction: Haemoproteus prevalence and reproductive success of infected male pied flycatchers in a montane habitat in central SpainClutch-size variation in Western Palaearctic secondary hole-nesting passerine birds in relation to nest box designDeterminants of abundance and effects of blood-sucking flying insects in the nest of a hole-nesting birdCorticosterone metabolites in blue tit and pied flycatcher droppings: Effects of brood size, ectoparasites and temperatureSex differences in circulating antibodies in nestling Pied Flycatchers Ficedula hypoleuca