Some species build their nests in trees - great globular masses sometimes three feet in diameter, supported on the larger branches, and connected with the ground by covered passages on the outside of the tree.
Witches-brooms are the tufted bunches of twigs found on silver firs, birches and other trees, and often present resemblances to birds nests or clumps of mistletoe if only seen from a distance.
It constructs large ball-like nests of dried leaves, lodged in a fork of the branches of a large tree, and with the opening on one side.
These driver ants shelter in temporary nests made in FIG.
A bird known locally as Hangi, not met elsewhere in Europe, nests at Filfla.