Read the Signs
If monitoring actual estrous schedules isn't practical, simply paying attention to climate, habitat, and doe behavior can help tip you off to which females are cycling. If one part of your property is cooler than another--say, because of higher elevation as in my example--does living there will tend to cycle first, making this the first place you should check for early rutting action. Otherwise, ask yourself where the best habitat is located. Find the spot where choice foods are surrounded by premium cover in the form of low brush, tall grasses, scattered trees and saplings, and edible shrubs like honeysuckle, blackberry, olive, and raspberry. The oldest doe around typically claims this spot and comes into heat early, before younger does. On the flip side, expect groups living in lesser habitat to breed later in the season.