Falklands.net website of the Falkland Islands Environmental Protection Unit We are a regional member of the International Penguin Conservation Work Group - Visit their website for world wide penguin information
our work you can help flora and fauna picture galleries in the media links newsletters contact us Search

Grass Wren
Cistothorus platensis falklandicus

Local Name: Short-billed Marsh Wren

Breeding Range: Falkland Islands
Length: 11cm.
Falklands Population: ~2,000 breeding pairs
World Population: as above
(subspecies restricted to Falklands)

One of two species of wren living in the Falklands, the Grass Wren is fairly widespread but nowhere abundant.

The subspecies Cistothorus platensis falklandicus is only found in the Falkland Islands.

Favoured habitat is tall marshland, grassland, reed beds and tussac grass.

Hollow ball-shaped nests woven from grass, often with an entrance tunnel, are constructed well above the ground in tall grass or reeds. Between 5 and 7 eggs are laid during October or November.

A wide variety of invertebrates are taken as food, including moths, flies, beetles, caterpillars and grubs. By nesting above ground Grass Wrens do have some defence against introduced rodents. Nevertheless Grass Wrens are found at higher densities on islands which are still rat-free, showing that the introduction of rats has been detrimental.

Sexes are similar.


grass wren
Grass Wren
Cistothorus platensis


Adopt a penguin
penguin hatchling photograph

Adopt and name your penguin, and we will send you reports and photos of your penguin's progress. We will even send you a map to show you exactly where your penguin lives, in case you ever want to visit. (Visitors are welcome).

Learn More


buy our book

click here to read more about our book penguins of the falkland islands and south america by doctor mike bingham

The Falklands Regime by Mike Bingham - now available online here or from bookshops world-wide, ISBN: 1420813757

The Falklands Regime by Mike Bingham


make a donation
We are always pleased to receive donations in support of our work. If you would like to make a donation, click here.
copyright 2002 Environmental Research Unit and Doctor Mike Bingham Design by www.ethicaldesign.co.uk