Level 1725 has 20 moves and requires 20 birds. However I've played at least 10-20 times and at the start of 9-11 of the moves, there is no bird on the screen to get. In fact, on one try, I didn't see a bird added to the screen until the 8th move. Makes it really hard to get 20 birds when it only provides one bird on half the moves. Maybe once or twice in the whole game does it give 2 birds at a time. Sounds like a bug?