A Eurasian wren sings energetically from a tree stump. Despite its tiny size, this bird produces one of the loudest and most complex songs in the forest.

A small Eurasian wren stands on the tip of a branch while singing loudly. Despite its tiny size, the wren has an incredibly powerful voice. Its song helps mark territory and attract a mate.

One of Marin’s most famous songbird families is the wrens — perky-tailed little brown birds with loud voices and a lot of personality. Outside of the birding world, many everyday people have not the ...