How do you get through the second to the city in chicken hunter wanted

To get to the 3rd level in CHW you must have at least 1000 points, have shot the top of the 2 columns (the columns are those to tall rocks shaped like pipes on the far right) till they look like chicken heads (3 times needed), and shot the moles key. Once you reach 1000 points you'll hear the same beep as you heard from the first level. When all the conditions have been met, you'll hear that same music that indicated you'll get to the next level from the first.