First, yeah there are too many ads. After each short, minute long bird hunting game, there's an ad, and after each regular match, there's an ad.
Second, the hit detection is really wonky in bird hunting. The birds don't detect the arrows if it hits their heads or the ends of their tails. instead the arrow just passes clean through, and the bird flys on. Also, I recall the computer version having more varieties of birds, and endless bird hunting, instead of a timer.
Altogether good, but the computer version is better.