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Y fantell goch
This is a common butterfly which can be seen anywhere
in North Wales including the summits of the highest mountains. Although it
is now know that the species can overwinter, in any of the four life stages
(at least in South England), most of our butterflies originate abroad and
start arriving in favourable weather conditions in the spring. These individuals
can then breed and the resulting offspring, together with further waves of
immigrants, result in very large numbers in late summer and early autumn.
There is clear evidence for a reverse migration so, for some individuals
at least, the trip to North Wales may not be entirely futile, as appears
to be the case for the Painted Lady.
The caterpillars are easy to find on nettle patches. Look for two leaves
that are spun together face to face.