RE: Do all deer feed at the same time?
In a way...yes but there are factors to it.
Like temperature, the warmer it is the later deer move from bedding to feeding. In the extreme cold most deer stay bedded up and like to feed during middle of the day when it is warmer.
Also pressure can have an effect on feed patterns...the more pressure in the area the more likely the deer are going to want to move closer to or after dusk.