These are cute, except for the pig, the pig has some issues. I made one out of felt, don't recommend that, they are much easier to make using polar fleece.
I made these in the first place because some kids from 4-H wanted to learn how to sew and they chose this as their project. Out of the three kids, two of them had never sewn before and they were very successful in making the birds.
The patterns and detail instructions can be found at Obsessively Stitching. I made the patterns bigger on my copier so they would be easier to sew.