Happy Chickens

When the henhouse is assemble and the sticks are inserted, then let the 5 chicks fall through the hole in the roof. At the start of your turn, turn over a counter and if a colour appears (red, blue, green or yellow), remove a stick from a hole of the corresponding color:

 If the dark chick falls you can turn over another counter and carry out the action again.
 If one or more of the chicks fall when removing the stick, you can keep them. The turn passes to the next player.
 If the chicken appears when turning over the counter, you must return one of your chicks to the henhouse.

The game ends when there are no more sticks in the henhouse. The player with the most chicks wins.