This afternoon on the walk to our base in Welly Wang Valley one of Hazel group spotted something on the grass that they decided to take a closer look at. It was a white frothy substance that often appears in the woodland at this time of year. The children discussed among themselves where the foam may have come from. "Maybe a woodland animal left it there like a squirrel?" "Perhaps it was the Gruffalo?"
On closer inspection, they noticed that inside the foam was a little yellow grub. What the children had discovered was cuckoo spit. This curious foam is produced by froghopper nymphs to protect them from predators. The froghopper nymph produces the foam by forcing air out of their bodies through a liquid excreted from their anus! The adult froghopper can jump up to 70cm high - equivalent to a human jumping over a tower block!
On closer inspection, they noticed that inside the foam was a little yellow grub. What the children had discovered was cuckoo spit. This curious foam is produced by froghopper nymphs to protect them from predators. The froghopper nymph produces the foam by forcing air out of their bodies through a liquid excreted from their anus! The adult froghopper can jump up to 70cm high - equivalent to a human jumping over a tower block!
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