Frank W. Preston was an English

English people

The English are a nation and ethnic group native to England, who speak English. The English identity is of early mediaeval origin, when they were known in Old English as the Anglecynn. England is now a country of the United Kingdom, and the majority of English people in England are British Citizens...

-American

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 engineer, ecologist, and conservationist. He helped found the Western Pennsylvania Conservancy

Western Pennsylvania Conservancy

The Western Pennsylvania Conservancy , headquartered in Pittsburgh, has been around for more than 75 years and exists to protect the water, land and life of western Pennsylvania. Half of all the land that has been protected by land trusts in Pennsylvania has been conserved by the Western...

 and worked to reclaim the land that is now Moraine State Park

Moraine State Park

Moraine State Park is a Pennsylvania state park on in Brady, Clay, Franklin, Muddy Creek, and Worth townships in Butler County, Pennsylvania, in the United States. The main feature of the park is its man-made lake, Lake Arthur, formed by impounding Muddy Creek, which is and is used for...

 in Butler County

Butler County, Pennsylvania

-Demographics:As of the census of 2000, there were 174,083 people, 65,862 households, and 46,827 families residing in the county. The population density was 221 people per square mile . There were 69,868 housing units at an average density of 89 per square mile...

, Pennsylvania

Pennsylvania

The Commonwealth of Pennsylvania is a U.S. state that is located in the Northeastern and Mid-Atlantic regions of the United States. The state borders Delaware and Maryland to the south, West Virginia to the southwest, Ohio to the west, New York and Ontario, Canada, to the north, and New Jersey to...

, in the United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

. Preston was a leading expert in glass technology. He studied bird

Bird

Birds are feathered, winged, bipedal, endothermic , egg-laying, vertebrate animals. Around 10,000 living species and 188 families makes them the most speciose class of tetrapod vertebrates. They inhabit ecosystems across the globe, from the Arctic to the Antarctic. Extant birds range in size from...

s throughout his life and published papers on the shapes and pigmentation of birds eggs, the distribution of the heights of their nests and their migration patterns. Preston also wrote three major papers on the mathematical characteristics of ecological rarity and commonness.
Frank W.