Colonial Home principle
Lessons from Burrowing Parakeet
Dig the cliff.
Cliff-Tunnel Nesting

Core lesson
A home becomes stronger when many doors open into the same wall.
Biological basis
Burrowing Parakeets nest in colonies by digging tunnels into cliffs, banks, and soft substrates, creating noisy social nesting areas.
Best use cases
Where this lesson tends to be most useful in practice.
CommunityHome buildingSocial nestingUnusual shelterCollective living