Most of the species of birds fly mostly throughout the evening (nocturnal migrants), other ones throughout daytime (diurnal migrants) and still other ones throughout both evening and day.
Hypothesis: A scheme of blended diurnal and nocturnal migration may be optimal when birds migrate over districts with somewhat poor situation for power deposition (not only critical but furthermore supple barriers). There lives a powerful and basic benefit of flying by evening because foraging time is maximized and power deposition can take location on days directly after and former to the nocturnal flights.
Rationale: In the present study optimal timing ...