J. M. S. Crane

The study examines how the gut microbiota of wild great tits varies with age, environment, and life history traits, finding that nestlings show greater sensitivity to ecological variation than adults.

The paper tests if dear enemy recognition affects reproductive success in great tits, finding no benefits or costs associated with the behavior.

The study identifies early embryo mortality, not infertility, as the main cause of low hatching success in kakapo, using data on fertilization and artificial insemination.

The study shows that diet affects gut microbiota diversity and problem-solving performance in wild birds, suggesting a link between microbiome changes and behavioral plasticity.