The location of two birds of prey that lay eggs worth tens of thousands of pounds is shrouded in secrecy over fears they may become targets for thieves.

Two peregrine falcons were spotted roosting on the roof of Surrey County Council headquarters in November last year.

But a little birdie has told the Surrey Comet that the winged killers have flown the nest to lay their eggs at a new location on top of a Kingston building.

Falcon chicks can fetch up to £20,000 on the black market so officers from Kingston wildlife team want to keep their new home a secret.

The eggs are also sought after by collectors as each clutch has different red and brown markings.

Wildlife police officer Hayley Parkes said she was delighted the birds had chosen Kingston to start their new family.

She said: “It is very exciting. I am sure there will be a lot of interesting sightings of the chicks because when they start to fly they are not very good.

“The birds usually nest on cliff tops so they can survey their domain and have a better vantage point to spot prey but they have obviously found a suitable place in Kingston."

According to Surrey Comet nature expert Tony Drakeford the fussy falcons have most likely relocated to find a better perch in order to scout prey.

The male and female duo have had a lot of attention from avian enthusiasts since arriving at the council building, leading Mr Drakeford to believe they have moved on to get a little bit of privacy.

He said: “The first location they were in was a bit low.

“They like high places to perch on and they like a bit of privacy.

“The problem was either disturbance or the lack of height of the building. Falcons are nesting here more and more.

“It’s lovely to have them in Kingston.

“It’s probably better that less people know they are even here because people start taking their eggs.”