There is a Yellow Cuckoo Clock that appears every Half an Hour at the Ski Lodge. The Cuckoo Clock is known as Fred. Here is a picture of Fred coming out of the Clock:
Here is some more information on the Fred.
This proves that Fred comes every half an hour:
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Hello penguins!
and one time I was with my fishing rod and blue puffle getting ready for some fishing fun and he jumped out and gave me quite a shock too! 
I have seen Fred a couple of times once because I actually waited for him but it took a long time (28 minutes) so he must have just come out of the clock.But yes it is true that Fred exists (as said in Crisdog93′s post)The other time I saw him when I was playing find four with my friends and just when I won he came out!