They try to acclimate him to regular society, which fails miserably time and again, mainly because Bird-Brain would eat all the food he saw. For the most part, Bird-Brain is unable to communicate with the New Mutants, despite the language powers of the New Mutant Cypher, because of how simplistic Bird-Brain's language is.
They attempt to integrate him into regular society, which consistently fails, primarily due to Bird-Brain's voracious appetite. For the most part, Bird-Brain is unable to communicate with the New Mutants, despite Cypher's language abilities, because of how basic Bird-Brain's language is.