As the planet gets warmer and spring comes earlier each year, birds may have to adjust their spring behaviors and migration timing to keep up with the weather! But what happens when bird populations fail to adjust their nesting and migration timing to the new, earlier advance of spring? How does a mismatch between the bird breeding season and the arrival of spring (flowers blooming, insects emerging, etc.) affect bird populations? In this episode, Ellie and Willson talk about Franks et al's study, "The sensitivity of breeding songbirds to changes in seasonal timing is linked to population change but cannot be directly attributed to the effects of trophic asynchrony on productivity."