Mainly through secondary means, when the owl's prey animals get scarcer.
Drought.
All creatures are subject to the effects of drought. This is not necessarily directly by the effects of heat and lack of water, but often by the reduction of a food source. Owls often prey on small mammals such as mice, which usually enjoy a very healthy population, no matter what the circumstances. It stands to reason that owls probably fare better during a drought than many herbivorous creatures do.
Drought and overgrazing has had such a detrimental effect on west Africa in many ways such as lessening the food supply for all the natives living in that area.
flooding
drought conditions in the midwest
animal migration.
A drought would have little or no effect on them, because they live in the ocean, which droughts cannot affect.
Well, we had strong regulations on when we can water our grass, but I don't think they are still in effect. I don't actually think we're in a drought anymore; we've had a lot of rain lately.
Their food sources are nocturnal. this is nature effect
Migration of animals
a drought or windy rain
Oh I got it now sorry for the bother.