Perhaps Ricky needs to be more physically active during that time of day. Think of other ways that physical development and needs may influence relationships in the classroom. Children of different ages and stages use blocks differently. Older children can build more elaborate structures that may involve buildings and roads within a town. The impact of a falling structure is quite different on various age groups.
Children become social beings very gradually.
Around the age of three, they begin to learn to share. They play in the same space, but do not interact with each other. Older children interact more, but may not have a fully developed set of social skills to draw upon. When children are stressed, they are even less social - much like adults. It appears that Ricky may need some social skills.