Even well camo'd. Some coyotes can/will still see you[or your firearm] move. Especially, if their looking your way. Some local coyotes can/will, pick you out even if you don't move. No doubt when they see something "out of place". They will hone in on it intently.
Although some may disagree. A local coyote will more readily pick you out from the surrounding terrain. As compared to a coyote not origionally from the area. But is only passing through.