<P> Rutting season occurs in autumn when the does come into estrus for a period lasting only several days . Males exhibit aggressive behavior in competing for mates . Does begin estrus again if they do not become pregnant . The gestation period is about 200 days , with fawns arriving in the spring ; the young remain with mothers throughout the summer and are weaned in the autumn . The buck 's antlers fall off in the winter , and commence growing once more in spring in anticipation of next autumn 's rut . </P>
<P> Rutting season occurs in autumn when the does come into estrus for a period lasting only several days . Males exhibit aggressive behavior in competing for mates . Does begin estrus again if they do not become pregnant . The gestation period is about 200 days , with fawns arriving in the spring ; the young remain with mothers throughout the summer and are weaned in the autumn . The buck 's antlers fall off in the winter , and commence growing once more in spring in anticipation of next autumn 's rut . </P>
when do deer lose their antlers in california
when do deer lose their antlers in california
winter
winter