If you flew the nest then you are an immigrant too.
We migrate when we leave home. Religious conversion is migration of the spirit. Facebook tells me that to process my profile into a page I must migrate the information. Migration is part of what it is to be human. What is space travel but proof of the lengths we will go to to migrate. We learn at university to grow wings and fly. We are all immigrants. The word immigrant comes from the word migrate, first described as a description of what birds do. Words like immigrant have been colonised and anesthetized. But without the anesthetic the word immigrant is a wondrous celebration of who we are. I am an immigrant, like the birds.