Chick Feed Farm

A yard full of chicks, every one of them hungry, and a little timer ticking away over each head. Tap a chick and you toss it some grain, simple enough, until a dozen of them are counting down at once and you are darting around trying to feed the next one before it gives up and wanders off.
The fox is the catch. He pops up among the chicks hoping for a tap of his own, and tapping him by mistake costs you. A few farm skins take the edge off, slowing the timers down or letting you feed from further away, and there are forty-odd farms that crowd in more chicks the deeper you go.