Greg W. Mitchell

TL;DR: Motus as mentioned in this paper is an international network of researchers using coordinated automated radio-telemetry arrays to study movements of small flying organisms including birds, bats, and insects, at local, regional, and hemispheric scales.

TL;DR: It is suggested that the tendency for juveniles to be less choosy about wind conditions at departure relative to adults could be adaptive if the benefits of having a more flexible departure schedule exceed the time and energy savings realized during flight with more supportive winds.

TL;DR: Using an automated digital telemetry array and an isolated island-breeding population of Savannah sparrows Passerculus sandwichensis, this work provides the first direct evidence that the timing of breeding events carries over to influence the time of migration in a songbird and assess for the first time how weather conditions on the breeding grounds also affect departure dates.

TL;DR: Evidence that condition, age, and tailwind assistance were all positively correlated with the likelihood of departure was found, suggesting that during spring migration, migratory songbirds may follow general rules for departure from stopover sites, despite varying ecological and life-history contexts.

TL;DR: Evaluated differential migration of Savannah sparrows breeding on Kent Island in the Bay of Fundy, New Brunswick, Canada in relation to sex, age, and body size found benefits for males of early arrival on the breeding grounds may have contributed to their wintering farther north than females.