The club initially was a small informal group of William Brewster’s childhood friends, all of whom shared his interest in ornithology. In 1872, Henshaw suggested that the group meet on a regular weekly schedule at Brewster’s house in Cambridge, Massachusetts. 

On November 17, 1873, the group met to formally establish the first American ornithological club. They named their club after the botanist and zoologist Thomas Nuttall who published the first field guide for North American birds, Manual of the Ornithology of the United States and of Canada (1832).

By 1876 the club determined to publish the Bulletin of the Nuttall Ornithological Club, which was the first purely ornithological journal, under the joint editorship of Charles Johnson Maynard and Henry Augustus Purdie. However, after one issue, Maynard and Purdie were removed as editors and Joel Asaph Allen, who had recently joined the club, became the sole editor-in-chief.

According to en.wikipedia. Source of photos: internet