Blackbirds unusual diet?

Okay its not Devon, but Dulverton IS Exmoor and some of Exmoor is Devon...so;

Came across this female BLACKBIRD obviously collecting food for babies, but it's the FISH, probably a Bullhead, which surprised us today in Dulverton. It was alongside the mill leat just off the River Barle on the road which passes the Bakery?

Never seen this behaviour before.