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 birding field trips throughout the Delaware River valley region, including a dedicated year-round trip schedule within the city limits of Philadelphia (BirdPhilly).


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Meetings

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May 20, 2021

May 20, 2021 @ 7:00 pm

Speaker: Rob Bierregaard

This is yet another virtual meeting on Zoom, so please register here and then look for an email containing the actual link to use so you can connect to the meeting on Thursday:
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Brief Description:
For over a decade, my research team studied the thriving population of Barred Owls that live in the Charlotte, NC, suburbs and surrounding countryside. A remarkable 300 pairs of Barred Owls live within 10 miles of downtown Charlotte. My graduate students and I, along with a small flock of undergrads, followed as many as 25 pairs of owls each spring and summer. We tracked dozens of owls to measure their home ranges and the dispersal of young. We installed video cameras in nest boxes and recorded the delivery of over 1,600 prey items. I will discuss what we learned about how Barred Owls have done so well in suburbia and give a general overview of how the species is doing across North America, including the controversies surrounding the Barred Owl’s invasion of the range of the Northern Spotted Owl.

Happily, a handful of Barred Owl

Brief Biography:

Rob Bierregaard’s passion for the natural world has always focused on birds of prey. He began as an avid falconer (there is no other kind). His Ph.D. thesis investigated the importance of ecological competition in structuring raptor communities. After graduate school, he spent eight years in Amazonian Brazil, leading a large-scale study of the effects of habitat fragmentation on tropical rainforest ecosystems. After returning to the states, he taught Ornithology and Ecology at UNC-Charlotte for 18 years. 

Post-Brazil, Rob’s research focused on Ospreys and Barred Owls. During his time in Charlotte he led a 10-year study of Charlotte’s thriving suburban Barred Owl population. He is currently leading the team revising the Barred Owl account for Cornell’s Birds of the World project.

Rob has been studying Ospreys since 1971. He has coordinated the Osprey census on Martha’s Vineyard since 1998 and began satellite-tagging Ospreys in 2000. Since then he has followed the migration of 47 adult and 61 juveniles tagged at nests from South Carolina to the eastern tip of North America in St. Johns, Newfoundland.

Belle’s Journey, his first children’s book, illustrated by Kate Garchinsky, tells the story of a young Osprey’s first migration to South America and back. The book, released in May of 2018, was awarded one of two honorable mentions in the National Outdoor Book Awards’ Children’s division, was listed as an outstanding science trade book for 2019 by the National Science Teachers’ Association, and was the Bank Street College of Education’s Children’s Book Committee’s pick-of-the-month for November, 2018.



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Field Trips

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May 14, 2021
May 14, 2021 @ 8:00 am - 9:00 am

Trip Leader: Tony Croasdale

Free to all members and non-members

We will be birding Center City every Friday morning in May at 8:00am to enjoy peak songbird migration and to see the nesting Peregrine Falcons and Red-tailed Hawks.

4/30 Eakins Oval to Lloyd Hall meet at Rocky Statue

5/7 Rittenhouse meet at 18th and Walnut Street

5/14 Rail Park meet at 13th and Noble Entrance

5/21 Franklin Square and Independence Hall meet at 6th and Race

5/28 City Hall/ Love Park meet at City Hall, South Broad St side


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May 15, 2021
May 15, 2021 @ 6:00 am - 9:30 am

Trip Leader: Bill Reaume

Free to all members and non-members

Come on out and enjoy spring migration at Awbury Arboretum. Awbury is a 55 acre privately owned arboretum in the Germantown section of Philadelphia. Over 150 species have been recorded at this little gem. The arboretum is a nice patch of green space in an area of dense housing and functions as a migrant trap attracting a great mix of birds and often giving excellent views of warblers and more.  We will be starting out at 6:00 am and finishing by late morning.  Parking at the arboretum is rather limited, so we will be meeting on Ardleigh Street directly opposite Awbury Recreation Center.  There is ample street parking available in this location.

For questions or to cancel your attendance, please reach out to birdphillywalks@gmail.com.


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BirdPhilly is an initiative of the Delaware Valley Ornithological Club. Founded in 1890, the DVOC has been based at the Academy of Natural Sciences of Philadelphia since 1891. The DVOC runs fields trips throughout the tri-state region, however BirdPhilly focuses on trips within in Philadelphia city limits in collaboration with Philadelphia Parks & Recreation and the Fairmount Park Conservancy.

Through BirdPhilly our goal is to increase interest and awareness of Philadelphia’s birds by providing quality birding experiences on expertly guided field trips. All field trips are free unless the site charges an admission fee. These trips are open to children, adults, and well behaved pets. BirdPhilly also participates in DVOC’s Philadelphia Bird Race to raise funds for conservation and research projects.

Visit the BirdPhilly webiste


The club enthusiastically welcomes new members – young people, beginners and anyone else who is genuinely interested in birding. Members benefit from the wealth of information and expertise that this club offers. The bi-annual club journal, Cassinia, is provided to members.

Birding

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© Bert Filemyr

The Delaware Valley is the name given to the region that lays on either side of the Delaware River, centered on Philadelphia. This consists of southeastern Pennsylvania, central and southern New Jersey and the state of Delaware. Tell me more...


The following counties fall within our boundaries.

In Pennsylvania;
Berks County, Bucks County, Chester County, Delaware County, Lancaster County, Lebanon County, Lehigh County, Montgomery County, Northampton County and Philadelphia County.

In New Jersey;
Atlantic County, Burlington County, Camden County, Cape May County, Cumberland County, Gloucester County, Hunterdon County, Mercer County, Middlesex County, Monmouth County, Ocean County, Salem County, Somerset County and Warren County.

In Delaware;
New Castle County, Kent County and Sussex County

DVOC Flickr Page

Want to see and share photos of Delaware Valley birds? Check out our Flickr page.

Notable Nearby E-Bird Sightings

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DVOC Initiatives

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BirdPhilly is an initiative of the Delaware Valley Ornithological Club. Founded in 1890, the DVOC has been based at the Academy of Natural Sciences of Philadelphia since 1891. The DVOC runs fields trips throughout the tri-state region, however BirdPhilly focuses on trips within in Philadelphia city limits in collaboration with Philadelphia Parks & Recreation and the Fairmount Park Conservancy.

Through BirdPhilly our goal is to increase interest and awareness of Philadelphia’s birds by providing quality birding experiences on expertly guided field trips. All field trips are free unless the site charges an admission fee. These trips are open to children, adults, and well behaved pets. BirdPhilly also participates in DVOC’s Philadelphia Bird Race to raise funds for conservation and research projects.

Visit the BirdPhilly webiste

New Bins for New Birders (NB4NB)

Partnering with DVOC's World Series of Birding Team's corporate sponsor, Nikon Sport Optics, NB4NB is committed to supplying new, serviceable binoculars to organizations that expose young people to birding and the outdoors. We focus on those organizations that are local to the Delaware Valley Region: southeastern Pennsylvania, southern New Jersey, and Delaware.

Donate to Us!

You can quickly and easily make a donation to various DVOC initiatives using PayPal. Click the "Donate" button above to do see a list of initiatives. If you have a Paypal Account please log in. If you do not, use the "Don't have a PayPal account?" section in the lower left-hand corner of the page that appears after you click one of the "Donate" buttons on the next page.

The DVOC is a 501(c)(3) organization.
Contributions to DVOC are tax-deductible.