Looks to be Oswit Land Trust in Palm Springs, California.

Mean summer low temp is 80F/26.7C, so this sounds like a particularly hot night, even for them, probably why this watering hole got so crowded.

GHO could hardly care less about Barnie’s defensive display! 😄

Very cool video, and it’s great to see them leaving out water on such an inhospitable night! If the owls are drinking en masse, it must be very hot and dry