It all depends on the latitude you're talking about. Deer up here in the midwest breed in late October through November and fawns of the year sometimes will come in and be bred in December and even into January. Deer down in Texas on into Mexico don't breed until well into December on through January. Does down there could be bred on into Spring if they are missed in a few cycles. That may be what you mean when you say you read fawns have been seen in just about every month.