Ten chickens have been decapitated at a Melbourne school, just weeks after more fowl were found with their heads chopped off at another school.

The most recent remains were found at a Kensington primary school on Thursday morning.

“This was a senseless act of animal cruelty that has occurred for no good reason,” Detective Leading Senior Constable Scott Bilston said.

It is the second such attack this month, with a duck and three chickens beheaded at a Point Cook school on October 1.