Pa Books On Pcn

“Second Atlas of Breeding Birds in PA” Twenty years after the first Atlas of Breeding Birds in Pennsylvania was published, the Second Atlas of Breeding Birds in Pennsylvania brings our knowledge of the state’s bird populations up to date, documenting current distribution and changes in status for nearly two hundred bird species. More than two thousand dedicated birdwatchers completed surveys of birds across the state from 2004 to 2009. The data amassed reveal the distribution of each species and show changes in distribution since the publication of the first Atlas. Additionally, a highly trained survey crew carried out bird counts at more than 34,000 locations statewide. These counts tabulated not just species but individual birds as well, in a manner that—for the very first time—enabled precise estimates of the actual statewide populations for more than half of the 190 breeding species detected. In all, more than 1.5 million sightings were compiled for the second Atlas, providing an unprecedented snapshot of