article_snippet.sent: A bright natural canvas: Swallowtail butterflies are vast flying slabs of colour the size of bats .
article_snippet.sent: Swallowtail butterflies are vast flying slabs of colour the size of bats.
article_snippet.sent: At Hickling Broad, there are boardwalks through the reeds and in season Swallowtail butterflies are mating.
article_snippet.sent: Swallowtail butterflies’re easy to see as Swallowtail butterflies hurry across the top of the reeds.