We are going into a period in the year when the crows start looking for grubs (usually leather jackets). These grubs are nesting in the thatch layer of the turf and once they mature they turn into crane flies. More often than not, the crows will leave the greens alone and go for less firm areas to peck, like tees and fairways, however they have been pecking away at some greens occasionally this year. The picture below clearly shows what one crow had been at yesterday.