Birds wintering further north-Audubon study

National Audubon Society released a report recently that showed that many birds in North America are wintering much further north than they used to. They used Christmas Bird Count data to look at where birds have been found over the a 40 year period. This graph from Associated Press shows some of the species that have been found wintering further north and the distance north. ©AssociatedPress

National Audubon researchers then obtained information from NOAA on the average temperature increase in the United States. The graph of these average temperature increases parallels the graph of the increases of birds wintering further north. Read more on this research at National Audubon Society webpage. SeEtta