What is the primary period for the bulk departure of Whinchats during their autumn migration south?

Answer

Late August and early September.

The southbound migratory phase for the Whinchat is generally concentrated between August and October, but the movement is not uniformly spread across this entire window. Experienced observers note that the bulk of departures from the established northern and central breeding areas tend to ramp up specifically during the latter part of August and continuing into early September. This timing is crucial for birders hoping to track the species during its southward journey before they reach their wintering grounds south of the Sahara.

What is the primary period for the bulk departure of Whinchats during their autumn migration south?
locationhabitatbirdornithologyWhinchat