— Just when you thought that all of the big discoveries these days were being made by high-powered scientists who spend their days wearing white lab coats in sparkling laboratories that are plastered with their multiple prestigious degrees and certificates -- an average birdwatcher has made a big discovery.
Gerald Clark, who is from near State College, noticed an unusually large egg among the clutch of four in a blue bird box that he was monitoring last summer.
When he checked in early July, there were five chicks including two smaller-sized nestlings that he surmised were twins.
In the world of birds, twins are extremely rare and had never been confirmed among bluebirds Clark’s observations.
His findings have been confirmed by the Cornell Lab of Ornithology and were presented last month at the Bluebird Society Pennsylvania conference.