the most interesting birds on St Kilda is the St Kilda
wren. It is different from the wren which lives on the
mainland of Britain. The St Kilda wren is a little heavier
with longer wings and with a longer, thicker bill and
legs than the mainland wren. It is paler and has more
stripes. It has a slightly different song and lays larger,
heavier eggs. All these things may help the St Kilda
wren to live on wet & windy St Kilda.