Evidence that drought cut late-summer hatchings raises fears that delayed effect of caterpillar die-off will be seen this year
The heat and drought of last summer caused British butterfly populations to crash later in the year, according to a new study.
Common butterfly species including the brimstone, small tortoiseshell, peacock, green-veined white and small white appeared in good or average numbers during the spring and early summer of 2022 but numbers in subsequent late-summer generations were greatly reduced.
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