To shoot the chicken in the outhouse, shoot through the heart shaped hole in the door to gain 10 points.  The outhouse will explode, and you can now shoot the chicken to gain 25 points.

To kill the chicken in the oven, wait until he goes inside the oven and the shoot the big button on the left of the oven.  He will emerge from the oven cooked and you can now shoot him to earn 50 points.  If you miss and hit any other part of the oven, you will lose 5 points per shot.

The snail needs to be fed, and will die of starvation at the 29 second mark of game play and you will lose 25 points.  In order to feed the snail, shoot seven times just behind his shell to coax him over to the apple.  He will eat it, and you will earn 100 points (25 points per bite).

The chicken with the frying pan will block all of your attempts to shoot him.  But if you alternate shooting first at his head and then at his feet for a total of 16 shots, on the 17th shot you will hit him and earn 75 points.  He will also return later in the game.

Shooting the fishing chicken is usually worth just
10 points.  However, there is a way to earn more.
 

XL & XXL Version: Occasionally the fishing chicken will pull the plug from the bottom of the pond (this will happen only if you don't shoot any flying chickens).  After he pulls the plug, a safe will fall from the sky and land on him, giving you 50 points.  If you shoot the fishing chicken just before the safe lands on him you'll get an additional 10 points.  The safe will make an increasingly louder whistling noise as it approaches the chicken. 

If you shoot the chicken waving the white flag, it is considered a violation of the International Hunter Convention and you will lose 50 points per shot.

XL & XXL Version: You can shoot at the car's bumper (10 points), hood (10 points) and door (10 points).  Doing so will make the chicken easier to shoot as it will now peek out from all openings.  The chicken is worth 25 points.

XL & XXL Version: This sleeping tree possesses the key that is necessary to open the locked safe.  Wake the tree by firing repeated shots at it.  The number of shots that are required will vary, but it's always less than the number of shots required to open the safe without the key.

When the tree wakes, the key will appear in its branches.  You can now use this to open the safe and obtain the Luciee Skycleaner Pro weapon

Occasionally, chickens emerge from the entrance to the shot-up farmhouse and run along the path in the background. These chickens are fast, but worth 25 points each. 

XL & XXL Version: A wood gate blocks the view of the farmhouse entrance. Destroy it for an extra 10 points, and an easier view of the path.

XXL Version: The gate is one of the keys to gaining access to the Bonus Level.

The mailbox is worth 5 points, but also can aid you in obtaining more points.
 

XL & XXL Version: At the beginning of the game, avoid shooting any of the flying chickens.  Wait for the chicken that's holding a kite to fly over the top of the farmhouse, and then shoot the mailbox.  This will cause the sky to fill with a chicken invasion and is a good time to use the Luciee Skycleaner Pro weapon.

XXL Version: The Mailbox is one of the keys to gaining access to the Bonus Level.

XL & XXL Version: This chicken announces its presence by knocking on your monitor screen and 
will proceed to display a series of drawings. Shooting this chicken earns 5 points. Shooting at the drawings earns points specific to each one.
 

XL & XXL Version: This chicken looks out from the drum in irregular intervals.  Shooting it earns 10 points.  Shooting the oil drum causes the contents to leak out and you'll lose 25 points for polluting the environment.

XL & XXL Version: These chickens will run in front of the scrap iron car before taking flight.  If they are shot while running, they're worth 15 points (only 10 points are awarded if they are already airborne).

XL & XXL Version: A chicken holding a kite flies across the horizon.  Shooting the chicken earns 
10 points.  Shooting the abandoned kite is worth 25 points.  Shooting in the reverse order however, earns even more points. The kite it still worth 25 points, but the falling chicken is worth 50 points.

XL & XXL Version: If you disturb the sheep by shooting at them you will lose 10 points. However, firing repeated shots at the heart sends the sheep into action and earns you 25 points.

XL & XXL Version: Jack and Joe the hedgehogs are playing Blackjack. If shoot them you will lose 50 points.  But you can join their game by shooting at the deck to draw a card.  Your ante of 5 points is deducted from your score.  Blackjack (21) wins you 50 points. A bust wins nothing and the card game is over.  If you draw a total between 17 and 20, you can "stand" by shooting at the turned cards and their total will be added to your score.  You can then play the game again if you wish.

XL & XXL Version: The treasure chest contains the Luciee Skycleaner Pro weapon, which can be used for three seconds to clear the area of all flying chickens.  Open the lock with the key acquired by shooting the tree, or by shooting the treasure chest repeatedly.

XXL Version: There are three keys to gaining access to the bonus level.  If you have scored enough points (900+), and have fired shots at the mailbox and wooden gate, shooting the spinning sign will activate the Bonus Level.