Under the 'INFORMATION' heading in the game, there is a file called 'SECRET LEVELS'. This file says:
Rumour has it that the two secret levels can only be reached using moving teleporters.
Another rumour says that the doorways are hiding near to glass shards.
Of course they are only rumours.....
Speaks for itself really. Here's where to find them.
Note where the two nails are lying back to back in the level, the ones with the glass shards on top of them. The doorway is right in the middle of these nails. To get to it, you have to be really quick when the level starts. Move the green duck to the left immediately. Bounce on the springs up to the orange duck, and move him to right onto the spring. This will blow a hole into the floor above, allowing the moving reciever to land on the nails. As soon as the orange duck has hit the spring, move the green duck down to the teleporter sender below. If done quickly enough, the reciever will still be on the nails. You will therefore be teleported onto the nails and can enter the doorway.
Turn one of the leftmost ducks into a leader and move him left towards the muncher and sender. Wait for the moving reciever to reach the switch at the bottom of the screen just right of the blue and yellow pillar. Send the green duck there, but be careful not to press the switch. Now wait for the reciever to fall off the screen, and send another green duck into the sender.
In the middle of the line of ducks at the top of the level is a switch. Press it. Now turn your rightmost duck in this line to a leader, and edge him off of the ledge to the right. Be careful to edge him off, as you don't want another orange duck to follow him. Let him land on the first switch you come across. Send another duck off of the ledge, but let him land on the spring at the bottom of the level. He will be teleported to just below the line of ducks. Move this duck down to the spring near the cactus on the left of the level. Send a second duck down to the same area.
What you now need to do is let one of the ducks follow the other, so that the orange duck that hits the spring is sent off flying up to the left. As soon as he hits the ceiling, turn him into a green duck and make him land on the spring at the left of the level. Make this duck press the switch. The other duck that you used should now be sent down to the sender where the porcupine is. One of the other three ducks that are sitting around the level should be used to press the switches that they are sitting next to now, so that the other duck can move down to the sender. The duck at the bottom who used the moving reciever can actually press two switches if you keep moving him to the right. DO NOT press the switch down near the sender, it is not needed. This duck is sent up to the very top of the level.
This duck should now be moved towards the time machine, standing in between the wires. Note that where the duck is at the top, there are another 2 switches. DO NOT PRESS THE SECOND SWITCH! To get past it, turn one of the remaining ducks in the line into a leader, and make the duck at the top follow him past the switch. Now the duck can keep moving past wires to the time machine to win the level.
Easy, eh?
At the top right of the level is a small platform with a glass shard on it, just left of the time machine. The doorway is to the right of the shard, near the edge. To get there, use your bridges to free the moving reciever and porcupine from their platform, and make it move towards the green duck. Place a bridge up to the time machine so that the reiever can reach it. Note that the porcupine will have to move past the green duck, and so move the green duck into the sender just before it reaches the sender. When the reciever is at the time machine, place another bridge up to the platform containing the secret doorway. Move the green duck back into the sender to send him up to this platform to enter the sercret level.
A Flying Doctor's SonProduction