Rotary cow.

Mr Minty prompted a quick trip to the shoe box. I was hoping to do this with gliders but "VI" has not been allocated; so settled for using helicopters.
Above is JetRanger ZK-HBO2 with Kaikoura Helicopters

Then we have R44 Raven 11 ZK-HVI2 with Helipark at Tuatapere.

And a bunch on ZK-HNE's.

Above JetRanger ZK-HNE1 with Helicopters (NZ) Ltd.
Below is BK117 ZK-HNE2 with Garden City Helicopters.

And below AS 350B3 ZK-HNE3 of Helicopters (NZ) Ltd at Queenstown.

And what's this all got to do with anything ?

Well BO, VI & NE = BOVINE.

Can ewe spot the misteak ?