Peacock and two Red Admiral feeding on Ragwort |
Wall Brown - cryptically beautiful! |
They're invading! Lots of White butterflies! |
Feeding up! Farne Islands fuel stop! |
Speckled Wood, looking good! |
Sunday 11th August comments: It’s an invasion!!!
Now, not everyone thinks about butterflies as long distance
migrants and some think it impossible that they fly hundreds of miles across
the sea; but that’s exactly what they do! In the last couple of weeks we have
seen tremendous numbers of butterflies migrating through the Farne Islands,
coming straight in off the sea from continental Europe.
This invasion has been particularly noteworthy in White
butterflies, with several hundred watched flying in off the sea and settling on
the various nectar sources on the islands. The same as migrant birds,
butterflies use the islands as a fueling station, stopping to feed before
continuing on epic migrations. The thistles and ragwort provide an invaluable
source of nectar for these dainty nomads, the islands an important stopping
point for thousands of butterflies.
So why do they do this? Why do they put themselves through such
epic over-sea struggles? Surely it would be easier to stay put?! Well,
butterflies migrate for many different reasons. They do it to avoid inclement
weather, to expand the range of their population, to avoid over population in
areas and also to find food. By migrating, they are able to exploit new and
untapped food resources, giving them an advantage when it comes to breeding
themselves.
Adult butterflies generally have a lifespan of just two
weeks so they need to make the most of it! We have seen several species already
this year and August can be a good month for seeing these amazing little
creatures on the Farnes. All our records are submitted to a national database
which is used to build up an overall picture of how butterflies are faring in
Britain and beyond. Our recording helps contribute to vital conservation work,
so why not come along and give us a hand counting them, we need your help!
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