"Pablo Capilla-Lasheras and Alice Risely summarize what we know, and what we need to know, in order to understand to what extent the gut microbiome confers important services for migrating birds"

"They discuss how future studies should design experiments to establish the causal drivers behind the intriguing patterns already observed in this emerging research field"

"The article is an excellent example of a comprehensive mini review, offering a state-of-the-art synthesis of a tightly focused research topic along with a forward-looking perspective"