Somewhere i got the idea that Spring Fawns had a 4 hour collection time, but I can confirm that it is a 2 hour collection.
I bought the first package with materials and unlimited energy a few times + bought the current package 1 time + bought the sleeping sheep on all but one account, and I still think it is going to be difficult to finish. Very frustrated. And so far all I have from the animals is the spring rooster on 2 accounts. Not even close to getting goats, much less donkeys.