No it won't. Early morning sees the sun bouncing off any manner of objects, frosted limbs of surrounding brush, ice on the barbed wire fence your sitting near, frost on the grass tops, hell, the sunshine reflects off EVERYTHING in the field. Coyotes would theoretically be running in circles in a panic if they got buggered by a little sunshine bouncing off stuff.
Coyotes are paranoid schizophrenics. If they have survived more than a year, they think everything out of the ordinary is going to get em. As a smart coyote that has been called before, comes in,they generally slow down and look for the source of the sound. If an unnaturally strong glare is seen bouncing off of your gun, or your call, or anything else, they will hold up, or decide something is fishy, and do the wide down wind circle. Or just leave. The occasional dumb coyote, or pup will still come in. In fact I have seen really call shy coyotes simply leave, because they couldn't see something causing the sound. This gets more prevalent as everybody has an electric call.
