Christ tells us that God cares even for the birds (Matt 6:26). The psalmist sees this in creation too, reflecting on how even the birds have homes where they can dwell. A bird only has a natural end, and so it simply desires to have a good life in this life. It is satisfied with a nest, food, and offspring. We have a supernatural end though, so the goods of this life can never satisfy us. The only true home is to dwell with God in His Church for eternity.
How lovely is thy dwelling place, O Lord of hosts! My soul longs, yea, faints for the courts of the Lord; my heart and flesh sing for joy to the living God. Even the sparrow finds a home, and the swallow a nest for herself, where she may lay her young, at thy altars, O Lord of hosts, my King and my God. Blessed are those who dwell in thy house, ever singing thy praise!
Christ is risen from the dead,
By death trampling down on death,
And to those in the tomb,
He has granted life!