Delaware Valley Ornithological Club

The Delaware Valley Ornithological Club (DVOC) is one of the oldest ornithology organizations in the United States. Founded in 1890, the club has held regular meetings at the Academy of Natural Sciences of Philadelphia for over 125 years, and has published the periodical ''Cassinia'' since 1901. Membership is open to any dues paying person with an interest in birds. The club organizes birdwatching field trips throughout the Delaware River valley region, including a dedicated year-round trip schedule within the city limits of Philadelphia ([http://www.birdphilly.org BirdPhilly]). Provided by Wikipedia