Why are Tree Swallow territories so small?
Tree Swallow territories are used for courtship and nesting only. They don’t defend feeding territories around their nests like many birds do. This fact allows us to space our swallow boxes just 100′ apart. In contrast, species like bluebirds must defend enough territory around their nests to supply themselves and their young with food. This is why bluebird boxes ought to be spaced at least 300′ apart.
