Donkey Kong Country 3

Here's a list of caves hiding Banana Birds. 
          Arich's Hoard - Beat Riverside Race in less than the 1:15:00.
          Then go to Brash's Cabin. He will get mad, shake the world,
          and a bridge will appear below Bobbing Barrel Brawl. Cross
          the bridge to Arich's Hoard. 
          Kaos Kone - When you get to the pond, do a figure 8 around
          the two rocks and the closed drainage pipe. The grate will open.
          Enter the pipe to get a Banana Bird. 
          Kong Cave - Go to the beach behind Bazaars general store
          with the hovercraft. 
          Bounty Beach - Take the hovercraft or motor boat to reach it.
          It's in the right of your screen facing Funky's rentals. 
          Smugglers Cove - In Lake Orangatanga, swim under the
          bridge, up to the top of the screen. 
          Barnacle's Island - Trade a shell for a bird. 
          Undercover Cove - You need the TURBO SKI to get to this
          secret cave. When you have the ski, jump to the upper lake
          behind Kong Cave via the waterfall. 
          Glacial Grotto - In the k3, go to the Blizzard's Basecamp and
          press Left to reveal a cave. 
          Sky-High Secret - Go to k3, then go to the Blizzard's
          Basecamp and get the present. Leave this world and go to
          Cotton-Top Cove, then enter Blue's Beach Hut. Give Blue the
          present and he will give you a bowling ball. Next go to
          Mekanos and enter Bazooka's Barracks. Give Bazooka the
          bowling ball and choose option 1 ("Lock and Load, sir!") If you
          did this right you'll be fired off to the Sky-High secret. 
          Bounty Bay - In Cotton-Top Cove, go to the first lake. Go to
          the waterfall and on the right is a cave to Bounty Bay. Enter
          Bounty Bay and get a Banana Bird. 
          Cliff Top Cache - At Barter Swap Shop, trade your mirror for
          the wrench. Then go to Bjorn's Chair lifts and give him the
          wrench. His chair lifts will start working and you can take them
          across to Cliff Top Cache. 
          Bramble's Bungalow - After beating the game a flower will
          grow on the path above Bramble's Bungalow. Grab it and take
          it to Bramble. He will thank you with a Banana Bird. 
          Hilltop Hoard - After getting the Gyrocoptor, fly to the cliff
          next to Razor Ridge. Enter to get the Banana Bird. 
          Belcha's Burrow - With the Gyrocopter, fly straight down
          from Kong Cave. Enter to get the Banana Bird. 
          K's Kache - Using the Gyrocopter, fly up to the lake above
          Cotton-top Cove. There will be a small island on it. Land on the
          island to win a Banana Bird. 

Bonus Demo 
     Once you got all the banana birds, go to "Wrinkly's Save Cave." When
     you arrive, the banana birds will fly you up to the Giant Cloud where
     the Mama Bird lives. They will set her free and a surprise demo will
     play.

     If you do this you can finish with a maximum total of 103% 

Cheat Codes 
     At the game select screen, highlight the slot you wish to load and press
     L, R, R, L, R, R, L, R, L, R. A screen will appear where you can
     enter one of the following codes: 

     ASAVE   Auto-saves after each completed level
     LIVES   Grants 50 lives  
     MERRY   During the bonus levels you will hear a
             Christmas tune, the star are bells, and the   
             bananas are blue presents   
     MUSIC   Dixie Kong's Music Test
     COLOR   Dixie's outfit will be purple and Kiddy's will be green
     HARDR   Make the game more difficult
     TUFST   No halfway barrels
     ERASE   Erases time records

Continue the Music 
     At the game over screen you can continue the music by pressing L, R,
     A, B, X, Y. 

Easy Krematoa 
     Input the cheat code, water, and get the bonus coins. Beat Lake
     Orangatanga and Kremwood Forest. Get the patch to Funky, then use
     the hovercraft and circle all the rocks collectively. Give the coins to
     Boomer. V`olia! You can play every level in the Lost World! 

Get All 80 Bonus Coins  
     Enter the CHEAT MODE code described above and type "WATER".
     You'll hear Dixie cry. Now swim to the waterfall on the left and touch
     it to enter a bananabird cave. If you beat it you will get 80 bonus
     coins! 

Lost World 
     To find the Lost World, you must go to the four rocks which make the
     shape of a circle. Using the jet ski, travel around the rocks (not the
     individual rocks but the whole circle of rocks) counter-clockwise until
     you hear a noise. The Lost World of Krematoa will appear in the light
     blue circle in the water between the rocks.