Now
it can be found everywhere across the Furness Peninsula, widely
across the south and west of the county and inland as far
north as Appleby. It is a species that has clearly taken the
opportunity provided by warmer summers to expand its range
enormously. This
vivacious medium-sized butterfly always brings to mind sunny
days in high summer, as its flight time is late July and early
August and its habitat is generally warm sunny roadsides with
plenty of bramble in the hedgerows.
Its
alternative name of Hedge Brown is perhaps more descriptive,
but it is nothing like as romantic as Gatekeeper. This
is one of the species where sexes are easy to distinguish,
as can be seen in the photos above. The male (on the right)
is somewhat smaller and has a dark brown scent bands across
each forewing.
Eggs
are laid in grasses and at the base of shrubs in sites that
will offer warmth and nectaring plants for the adults. Bramble
is popular because it flowers over a long period at the flight
time and it is an open flat-topped flower - the Gatekeeper
has a very short proboscis. Around
the Furness Peninsula the species is so common that it is
now found in unlikely places where the habitat doesn't look
typical. It can be found all over Birkrigg Common to the south
of Ulverston, including around the trig. point on the summit.
Here there isn't much shelter and little besides bracken but
there is a terriffic view on a clear day!
My
most unusual sighting was of a female Gatekeeper on Mawthwaite
Moss in the south-west Cumbrian foothills. This specimen was
within 5 metres of a stream hosting the Golden-ringed dragonfly,
a species more noted for cooler fellsides than warm sunny
spots.