- ISBN: 9781558494206 | 1558494200
- Cover: Hardcover
- Copyright: 3/1/2004
In 1974 the Massachusetts Audubon Society and the Massachusetts Division of Fisheries and Wildlife launched a five-year survey to map the distribution of the breeding birds in the Commonwealth - the first such comprehensive effort in North America. During this period hundreds of volunteers spent countless hours in the field, ultimately confirming 198 breeding species.