Do white and gray squirrels interbreed?
Yes (if they didn’t, then they would be different species). When it comes to actual mating, coat color is probably not nearly as much a factor as hormonal attraction. Squirrels have two breeding seasons per year, one in winter and one in summer; within those periods, mature females will enter estrus at different times. When a female enters estrus, interested males come from hundreds of yards away and camp out at her “door step” (outside her nest) without every seeing her coat color. Most accounts of “courtship”, itself, are brutal with little opportunity for females to be selective by any means, let alone coat color. Fortunately for her, she is only “receptive” and pursued by males for one day during each breeding period. During that time, she may be impregnated by several different males, none of which help raise the young.
