He examined the bird's legs and talons, felt it take a step and gained an understanding on which more complete concepts could be built. You don't need to. The blind child will be taught Braille by a specially trained teacher of the blind and visually impaired. However, you should find ways to expose your blind preschooler to Braille, just as you expose your sighted students to print. Inexpensive Braille labels can be added to print labels in the classroom.
Young children learn to solve problems by doing for themselves.
An important part of the child's life is knowing when to do it himself and when to ask for help. The additional assistance we too often give a blind child teaches dependency. This robs the child of confidence and the opportunity for problem solving. Yes, he will need additional hands-on directions for many things. But this doesn't need to be a problem.