Why the Rooster Crowed

There is a new rooster on Henrys farm and his job is to wake everyone up in the morning. But the rooster just wont crow! So Henry wakes up late each morning and cant finish his chores. And then late one night while everyone on the farm is fast asleep, Henrys favorite sheep climbs over a broken fence that Henry didnt have time to fix and heads straight for a wolves den! Can you help figure out why that new rooster just wont crow?