With only five nests of the Zapata wren ever described, the breeding biology of this bird is poorly known. The nest is a ball of saw-grass leaves, about 14 centimetres across, with a side entrance and lined with feathers. It is situated a little way off the ground amongst saw-grass. The breeding season is thought to either be very long, or there may be two broods each year. Both sexes build the nest, whilst the female alone incubates at least two eggs (2). This energetic wren searches for food amongst low vegetation, or on the ground, where it scratches the terrain in search of prey (2). The Zapata wren has an extremely varied diet consisting of insects, spiders, lichen, seeds, slugs, snails, snail eggs, lizards and frogs (2) (3).