#BOUasm26 MJE6/6 But more strikingly, nest spatial distribution shows that arrival constrained #Redstart nest only in cooler areas, in accordance with settlement informed by #phenology. Active territory choice drives localised decline rather than indiscriminate settlement and #trophicmismatch.

#BOUasm26 MJE3/6 Migrant decline is well-covered in the literature - #trophicmismatch proposed as a mechanism in arrival date constrained philopatric migrants. But there is an alternative mechanism – #phenology-related reduced settlement at asynchronous sites and range shift.