“a person who wanders from his place.” For a bird, the bird’s nest is a place of safety and security, as well as family and responsibilities. It is where the bird “belongs” and where it will live and function best. A bird who wanders from the nest (and “wander” has the implication of more permanent wandering, not just “going out for a short walk”) is not only leaving safety and security, it is leaving where it was designed by God to best fit into life and where it functions the most effectively for itself and others.
Similarly, a person who “wanders” from their place is leaving a good measure of safety and security, and also leaving behind the responsibilities they have to God and others, and wanders away for any of a number of reasons—perhaps to find something they don’t have or fill some void they can’t seem to fill.
To understand the fullness of this proverb it is important to realize that, although many English versions say “wanders from home,” the actual Hebrew is “wanders from his place,” and the “place” can be physical, such as a home, or it can be metaphorical for what the person is being called by God to be and do at any given point in life. A person who ignores or abandons what they are called to do for the Lord and who wanders off to somehow find a more satisfying life is like a bird wandering from its nest: things will generally not end well.
Proverbs 27:8 points out that each person has a place in God’s world, with gifts and talents and responsibilities that go with those talents. and people are most blessed and satisfied when they are doing the will of God. But many people get “lost” and can’t seem to find where they fit in. We learn from the scope of Scripture that to help with that situation God has called pastors and helpers who are gifted at helping people find where they fit in for the Lord.