Her mate Beau has been faithfully flying into the nest in the water tower, built in the days when the campus was an agricultural college, to bring food to his mate as she dutifully sits on the eggs in the nest.

A recently installed upgraded webcam camera is relaying amazing photographs to the co-ordinators of the project and those who log on to the site to track the progress of the laying and nesting.

Project co-ordinator Doctor Cilla Kinross said she is thrilled a third egg has been produced.

“You never know there could be a fourth one,” she said.

Although the peregrine falcons are not on the endangered species list in Australia, they are vulnerable, according to Dr Kinross.

“They like to nest in cliffs for example where they are often disturbed by rock climbers,” she said.

“Or they are at threat from pesticides.”

However the nest set up in the water tower nine years ago means the pair of falcons have made Orange their home.

The pictures captured via the upgraded webcam installed in the nesting box are providing valuable data for Dr Kinross to pass on to the scientific community.

“It is really the last three years when we have been able to film what’s going on that I have been able to gather accurate data,” she said.

Catching the falcons on film is providing an interesting insight into the diet of the birds, according to Dr Kinross.

“From the images it appears that a large percentage of their diet appears to be starlings,” she said.

“Other birds are definitely involved but sometimes it is difficult to determine as they might only bring in a wing for example,” Dr Kinross said.

The eggs will remain in the incubation period for the next three to four weeks before they hatch.

“They will stay in the box for the next five to six weeks before they will start to learn to fly and in another three months they will be taught to hunt,” Dr Kinross said.