The frog genocide case is solved. For 10 years, archaeologists have wondered about a canal from the time of Roman rule in Britain, filled to the brim with the bones of amphibians. Versions have been uploaded: from a climate disaster to an unknown virus.
Finally, researchers from Bournemouth University studied gnawing marks on bones. It turned out that there was no mysticism - it was just a dump of birds of prey. Short-eared and short-tailed owls dropped pellets there after a hearty dinner for 10 years in a row.
Analysis of the remains showed that the birds mowed down the young generation of frogs in one winter. And all because the Romans stopped living in swamps permanently and went to seasonal pastures. The owls took over the city and caused a demographic disaster for the frogs.