This year, CWF embarked on a new, ambitious project to monitor and characterize the previously understudied population of American oystercatchers nesting along the Delaware Bayshore. Since so little is known about this breeding population, we had a lot of ground to cover this first field season, both physically and metaphorically. One of the goals of the project is to characterize threats to oystercatcher nest success on the bayshore, whether it be predators, flooding, or something else entirely. It sounds straightforward, but when you consider the span of the project (35 sites across approximately 45 miles of bayshore), monitoring nesting pairs gets a bit more challenging. That’s where game cameras come in.
.CWF biological technician Caroline Abramowitz deploying a trail camera to monitor an oystercatcher nest.
Game cameras are an extremely useful tool for wildlife monitoring. Cameras deployed at nest sites can provide valuable information about oystercatcher behavior, predator presence, and nest fate (whether the nest hatched or was lost prior to hatching). This is especially important for our Delaware Bay sites, many of which are remote and cannot be monitored as frequently as other locations. Game cameras enhance our in-the-field monitoring and can pinpoint the true cause of nest loss that would otherwise be difficult to determine in the field. Accurate knowledge of nest fate and predator presence is crucial for understanding which factors significantly impact oystercatcher success along the bayshore.
Depending on where you look and who you talk to, the fate of many osprey nests might bring tears to your eyes. Since a nor’easter impacted the coast with strong onshore winds for several days, young ospreys have been dying of starvation in plain sight. Over the past week, several reports of adults who abandoned their nests with young have been received. This year, weather has impacted the availability of fish and outcomes of nests in the Garden State.
Kelly Scott, Resource Interpretive Specialist 3, NJ State Park Service holds Bayley before releasing her into the wild.
This past Monday I joined several partners to release a very special northern diamondback terrapin back into the wild. This adult female terrapin had been illegally collected and sold into the black market pet trade. Over the past couple years we have been working on a plan to get her back the wild.
Each of these partners, including Dr. John Wnek, MATES/Project Terrapin, Kelly Scott, NJ State Park Service, Brian Zarate, NJDEP Fish & Wildlife played an important role in her successful release (you can read about each of their roles in a story by Dr. Wnek below). We gathered in the parking lot of a former marina which CWF & NJDEP Fish & Wildlife converted into suitable nesting habitat for female terrapins. For all of us, I think it’s safe to say that it was bittersweet to see her swim off into the brackish water. She was home.
Princeton eaglets in their new nest; photo by John Heilferty
The Princeton eagle nest collapsed sometime between Friday June 2nd and early Saturday June 3rd. The Princeton pair had two chicks that were ten weeks old and close to fledging. NJ Eagle Project volunteers, Kevin and Karin Buynie monitor this nest and went out as soon as they were notified. When they arrived one chick was perched up in the tree and one was on the ground. The grounded chick was taken to Mercer County Wildlife Center for evaluation. The next day Kevin returned to the nest site and found the second chick now on the ground, so that chick was also captured and taken to MCWC. Both chicks were found to be uninjured and ready to return to the nest. A plan was formed to build a new nest in the tree and renest the two chicks. On June 11th, a group of volunteers and staff from Mercer County Wildlife Center met at the nest site. John Heilferty, retired ENSP Chief, climbed the nest tree and built the nest as volunteers helped to send up the needed materials. Diane Nickerson with the MCWC brought the two chicks, which were banded with Green NJ band H/39 and H/38 and silver federal bands. The chicks were then placed back up in the nest. One of them decided to fledge and the other perched on a branch near the nest. The recently fledged chick did return to the nest that evening and the second chick fledged June 16th. Thank you to Karin and Kevin Buynie, Diane Nickerson and volunteers Daniel and Hope with Mercer County Wildlife, John Heilferty, Kim Korth, and Roger Smith.
Scroll through the slideshow to view photos from the renest.
Princeton nest after collapse
Remains of nest
eaglets at Mercer County Wildlife Center
eaglets at MCWC
Nest tree
nest building materials
John Heilferty climbing tree
John working on nest platform
nest construction
platform finished
adding sticks
finished nest
Kevin Buynie with eaglet
Diane Nickerson, Kevin Buynie and Karin Buynie band the eaglet
In the May 16th blog, Shorebird Stewards On the Bay in May, it’s mentioned that some beaches along the Delaware Bay have restricted access every year from May 7th to June 7th. This is due to the migratory shorebirds that travel thousands of miles and need a place to stop to feed. Our beaches contain excellent food sources to help birds gain weight to continue their journey- horseshoe crab eggs. They are filled with fat and protein. The Delaware Bay is the largest spawning area for horseshoe crabs in the world!
Now what do the Shorebird Stewards, such as myself, do all day? We monitor our assigned beaches and educate the public about this incredible phenomenon! My favorite beaches are Roosevelt Blvd. beach and Cook’s Beach because I see the most active flocks of shorebirds at these locations.
A group of the infamous Red Knots: Calidris canutus, Semipalmated Sandpipers: Calidrus pusilla, and Ruddy Turnstones: Arenaria interpres, at the beach on Roosevelt Blvd., photo: C. Franceschini
On a quiet day with not many people to educate, there are many things for us Stewards to do. Some Stewards read their books, watch movies, listen to music/podcasts, color/paint, take walks, research, etc. I do all of the above! Since we have a love for these special shorebirds, most Stewards also birdwatch! It’s a must to bring your binoculars or scope to observe these beautiful birds. Sometimes, you observe other interesting animals, too!
American Oystercatcher at Cook’s beach: Haematopus palliatus photo: C. FranceschiniBald Eagles, Haliaeetus leucocephalus, photo: C. Franceschini
Another activity to do in the down-time is to flip the spawning Atlantic Horseshoe crabs, Limulus polyphemus, back onto their legs so they can crawl back into the bay. When the tide rise, these crabs get overturned by the waves and have no way of returning back to their feet! Personally, this is my favorite activity to do. When you return after your “crab walk”, you get to see the tracks of their feet traveling back into the bay where they belong. Below on the left is a picture of flipped and rescued crabs: the one on the left is a male who decided to bury himself in the sand to preserve water until the tide comes back in, and the one on the right is a male who decided to make the trek back into the bay. When the tide comes in, the horseshoe crabs come up and begin spawning. Pictured below in the middle is an example of how crowded the beaches get with these creatures! On the right, is a photo of a tagged crab I found, and reported it to the US Fish and Wildlife Service so that they can collect data on the tagged crabs.
You can also get involved with helping these critters! “Return the Favor” is an organization dedicated to conducting beach walks to flip overturned horseshoe crabs on the NJ beaches of the Delaware Bay. You can join public walks that are held by walk leaders or sign up to be a volunteer and conduct your own walk (until July 15th, 2023 or next year). I am a volunteer and walk leader and it is one of my favorite things to do. Flipping horseshoe crabs is such a special event because that means you’re saving those crabs so they can continue to spawn and produce eggs for the shorebirds. With your help, you could help save hundreds of crabs just by flipping them over! Of course I had to capture this special moment of me flipping a crab (picture below)!
On these walks, you experience much more than just crabs. You get to see other wildlife that emerges during dusk or dawn. You can also go on the closed beaches to save the crabs that can’t be rescued during the day. During my walk, I got to see thousands of horseshoe crab eggs!
C. FranceschiniHorseshoe crab eggs photo: C. FranceschiniFemale horseshoe crab, photo: C. Franceschini
If you follow us or any other wildlife organizations on social media, you may have noticed that our posts these last few days have been inundated with amphibians. It may seem like odd timing, given that our early breeders (wood frogs, spotted, and Jefferson salamanders) completed their crossroad migration last month. But the reason is simple – it’s Amphibian Week!
Close up of an American toad that hitched a ride during this year’s crossing. Photo Credit: Nikki Griffiths
Globally, amphibians are disappearing faster than any other vertebrate group. The International Union for the Conservation of Nature (IUCN) estimates that 41% of amphibian species categorized for their Red List are currently facing extinction. That estimate is likely conservative, given that these creatures are often small and difficult to survey, rendering many species data deficient. This is concerning from multiple perspectives. From an ethical standpoint, we don’t want any wildlife to go extinct except maybe, in my extremely biased opinion, certain types of ticks… (I began my career as a moose technician and saw firsthand the terrible consequences that winter ticks have on these behemoths). Beyond that though, amphibians are tasked with a lot of responsibilities and carry out their work efficiently and without complaint. The list is inexhaustive but here are a few things that amphibians are doing for us and our planet as we speak: filtering water, sequestering carbon, eating pests (like mosquitos!), serving as prey for countless predators, helping researchers study regeneration (with hopeful applications to the future of organ transplants), aerating the soil in your garden, indicating where water sources have been contaminated by pollutants, and giving everyone who meets them a reason to smile.
For the second year in a row there haven’t been eagles nesting on the Three Bridges platform in view of eagle cam. The pair used the platform when it was first installed in 2021 and viewers got to watch the two chicks grow up and fledge. In 2022 & 2023 the pair have nested in a tree nest instead of the platform. While it’s disappointing that the pair didn’t use the platform, there was still plenty of avian action at the tower this season. There were several immature eagles visiting the platform this season, perhaps in the next few years one of these eagles will pair up and use the platform.
Slideshow: Highlights from the 2023 Three Bridges Eagle cam season
December 4th, 2022, photo by: Mary Ellen Hill
December 9, 2022; photo by, Barb McKee
eagle pair chase off Red- tailed hawk
American Kestrels
Peregrine Falcon
Red-tailed hawk
Northern Flicker
The eagle cam will be turned off April 1st.
Thank you to all the viewers who watch and enjoy this eagle cam. During the 2023 season there were 22,981 views of the cam. Thank you to the the eagle project volunteers, especially Mary Ellen Hill, who grab screenshots from the cam. We also thank PSE&G for hosting and supporting the eagle camera.
I recently attended my first career fair at Stockton University. When asked if I would attend, I felt like I couldn’t say no, as I am currently seeking at least 5-6 student interns or seasonal field technicians to assist with several wildlife conservation projects. At first, I wasn’t sure what I could display to draw attention to our table and prospective summer jobs working with rare wildlife.. Then it hit me. I bring what I use when working with wildlife in the field!
The Duke Farms eagle cam is extremely popular and just this week viewers watched as two chicks hatched. These two chicks will be watched by a multitude of viewers over the next few months as they grow to become juveniles and leave the nest. As with anything in Nature, this pair has had it’s ups and downs. I wanted to summarize the history of this pair and nest. The male is a NJ banded bird (A/59) and has been in the pair from the beginning, he is 23 years old. Interestingly, there have been several females in the pair over the years. Thank you to Duke Farms for hosting the cam and their tech team that keeps it running smoothly when issues arise. The cam location has changed as well as the cam itself over the years and the quality of the picture has improved.
We’re proud to release results of the 2022 New Jersey Osprey Project Survey, which documented the greatest number of nesting ospreys in the history of the project. Overall, surveys by staff and loyal volunteers recorded a total of 733 occupied nests throughout the state. The majority of ospreys (83%) continue to nest along the Atlantic coast of New Jersey with the remainder nesting along the Delaware Bay and inland locations. Surveys recorded the outcome of 73% of the known population, which allows us to present these results with confidence.
