Really nice game, theme was great and it was very enjoyable running around catching ducks and chicks, they were very cute.
If you do continue developing this game, one suggestion of mine to add a little more depth would be to go from an angled top down view and increase the number of ducks and chicks by a whole lot. Then when you click you would be able to get multiple ducks and chicks which would increase the difficulty and risk of clicking (currently the mental math isn't too difficult and you can selectively choose how many ducks you want).
Nonetheless, great game and nice work :)