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.
When the Barnegat Light habitat restoration was completed to benefit piping plovers several winters ago, the partners anticipated it would need periodic maintenance to keep it in optimal condition. As it has turned out, the inlet beach site has needed more frequent attention, an annual winter “touch-up” to prep the site for the nesting season. With this in mind, earlier this month, Todd Pover, CWF Senior Wildlife Biologist was on-site for nearly a week to oversee the habitat work.
The maintenance this winter primarily focused on the two foraging ponds, as those features have proved critical to the success of the plovers utilizing the site. Thick vegetation was mechanically removed from about three-quarters of the perimeter of the large pond. Excessive vegetation can obstruct piping plovers, especially their chicks, from using the pond’s edge to feed. The heavy vegetation can also provide cover for predators. Meanwhile, the smaller pond was filled in with sand due to late fall/early winter storms and tidal surge. Although the small pond has needed to be “refreshed” each winter, this was the first time it had to be entirely re-dug. Experience has shown that having two ponds present at the site – giving plovers alternative feeding options if one pond is not accessible or as productive during a portion of the season – has been a key element in boosting productivity, especially as more plovers chose the site to nest. In addition to the pond work, some vegetation thinning or removal was also completed to enhance the suitability of the nesting areas as plovers prefer sparsely vegetated areas to lay their eggs.
Invasive vegetation being removed from the edge of the large piping plover foraging pond.
At the beginning of February, CWF biologists Todd Pover, and Meaghan Lyon attended the USFWS’s Piping Plover and Least Tern Workshop at the National Conservation Training Center in West Virginia. The winter season is the perfect time for beach nesting bird folks to gather and discuss the status of each state’s breeding population and how we can do better to reach recovery goals for these endangered species in the coming years.
For management purposes, the east coast of the United States is broken up into three sections; the Southern recovery unit, the mid-Atlantic recovery unit (this is New York and New Jersey!), and the New England recovery unit. The Southern recovery unit, consisting of plovers breeding from North Carolina north to Delaware, has been on a decreasing trend for productivity and not meeting recovery goals, whereas the population in New England is booming with pairs (so much so that plovers are nesting in parking lots and the backyards of beach front homes!). New Jersey and New York have been holding steady with 581 pairs of piping plover combined and just barely meeting our collective recovery goal.
Topics of high interest among the group of roughly 100 participants included predators, migratory pathways, and advancing diversity and inclusion among our community. Biologists across the coast have been grappling with predation by ghost crabs and this could be increasingly problematic in the future with impacts from climate change. As the climate warms, we could be seeing more mild winters, which translates to less crab die off during the winter and bigger crabs during the beach nesting bird season, thence becoming more of a threat to nests and chicks.
Workshops like this allow us to join together and discuss what is working and what is or could be problematic in the future so that biologist across the range can be well equipped with the knowledge and connections to protect plovers and all of the other species that use beach habitats across the range.
CWF is excited to announce a new project funded by the National Fish and Wildlife Foundation’s Delaware Watershed Conservation Fund designed to develop and execute management strategies for American oystercatchers along the Delaware Bay. Breeding populations of American oystercatchers (State Species of Special Concern) have been well studied and monitored along New Jersey’s Atlantic Coast since 2003, but very little is known about the oystercatchers that nest on the sandy beaches along the Delaware Bay. In 2021, CWF conducted a near bay-wide window census survey to establish a baseline estimate of the Bayshore population. Thirteen oystercatcher pairs were documented across approximately 35 sites from Cape May Point to Sea Breeze, prompting a need for further research and management. This new project seeks to shed light on this understudied population and add to our scientific understanding of their management needs.
American oystercatcher. Photo courtesy of Daniel Irons
Green band D/25; banded in April 2011 at the Manasquan River; photo by; Rich Nicol
Bald Eagles are the earliest nesting birds in New Jersey. Two pairs of eagles laid eggs in December of 2022 and those nests have already hatched. Those pairs are the really early “birds”, so far 73 pairs of eagles are incubating (laid eggs). Nest Monitors are keeping an eye on over 300 known eagle territories in NJ, the bulk of which lay their eggs in February to mid-March. Eagles incubate for approximately 35 days before hatching occurs. The female does most of the incubating the male also takes over the incubation duties so the female can go out and hunt. One hundred and fifty nest monitors keep track of the eagle nests and report on incubation. It can be quite difficult to tell when an eagle is in the nest incubating. Sometimes all the nest monitor can see is just the top of the head pop up every now and then. One way to determine incubation at a nest is to witness a “nest exchange”, where the male and female switch incubation duty.
photo by: Barb McKeephoto by: Kevin Reddenphoto by: Poolake’s
Over the next few months as the eagles incubate and hatch chicks, they are very sensitive to disturbance. Nest Monitors are trained and experienced and only view the nest from a location that doesn’t disturb the eagles. Monitors use high powered scopes and cameras to determine the status of the nest. While it’s always a great sight to see an eagle, please respect them and view from a distance. To see what goes on in an eagles nest close up check out the Duke Farms eagle cam. The pair is currently incubating two eggs and hatching of the first is expected around February 24th. You can also watch a pair of eagles at The Three Bridges eagle cam. They aren’t yet nesting and we’re not sure where they will nest this season, but they have been making frequent appearances at the nest tower.
According to an old English proverb, good children should be seen and not heard. If that’s the case, salamanders could be thought of as the epitome of obedience- rarely uttering a sound (though some species are capable, including mole salamanders and newts) and often visible only during migration events or chance encounters along hiking trails. Because they don’t command our attention in the way that flashy birds and charismatic mammals do, they may be easily overlooked. Indeed, amphibians are one of the least studied classes of vertebrates- and the most threatened, with 41% currently facing extinction. Though staggering, that statistic is likely quite conservative as almost a quarter of species known to science are considered data deficient by the International Union for the Conservation of Nature (IUCN). This is concerning- not only for supporters of the intrinsic value of wildlife- but also from a practical standpoint…
A 1975 study conducted in Hubbard Brook Experimental Forest, NH, estimated that an average of 2,950 salamanders of five species (primarily red-backed) occurred across each hectare of the site. Using this figure, they calculated the total weight, or biomass, of salamanders and found it to be roughly equivalent to all small mammals and > 2x that of birds present during peak breeding season. Extremely high densities and biomass place a surprising amount of power and responsibility on the shoulders of these small creatures.
While many residents of New Jersey prefer to spend winter days indoors and away from the cold, there are those dedicated birdwatchers that view the wintertime as an opportunity to get outside and observe species they normally wouldn’t see during the rest of the year. New Jersey hosts a variety of migratory birds, some escaping the freezing temperatures of their Arctic breeding grounds during the harsh northern winters. There are many species that both breed and winter in the Garden State and are easier to locate and observe while trees are bare. Located on the Atlantic Flyway, New Jersey is also a prime spot for coastal bird watching during the fall and spring migration, with Cape May being one of the most active bird watching hotspots in the country.
photo by NJ Eagle Project Nest Monitor, Paul Lenzo
Conserve Wildlife Foundation of New Jersey and the New Jersey Department of Environmental Protection’s Fish and Wildlife have released the 2022 New Jersey Bald Eagle Project Report. The 2022 eagle nesting season was a record year for New Jersey’s nesting eagle population with 250 active nests identified.
The 250 active nests (meaning the nests produced eggs) represent an increase of 28 active nests since 2021. Of those nests, 83 percent were successful and collectively produced 335 offspring. The productivity rate for nests with known outcomes was 1.42 young per nest, which is above the range required to maintain healthy population numbers. The 2022 NJ Bald Eagle Report includes details on the nesting season, resightings and recoveries.
One of the three fledges from the 2022 Manville nest: photo by NJ Nest Monitor, Rose Joy
These numbers could not have been achieved or documented without the dedicated efforts of the 150 New Jersey Eagle Project volunteers who conduct the majority of the nest-observation work vital to tracking the population and nest distribution of our state’s Bald eagles in all 21 counties. CWF is honored to manage these volunteers in partnership with the Endangered and Nongame Species Program and thanks them for their invaluable service.
CWF would also like to thank our partners, who make our bald eagle conservation work possible, including PSE&G, Wells Fargo Advisors, Wakefern Food Corp./ShopRite Stores, Mercer County Parks, Wildlife Center Friends, the American Eagle Foundation, and the Zoological Society of New Jersey.
The results are in! It wasn’t a great year for upland sandpipers at the McGuire Airfield. Numbers of breeding pairs at this location have decreased to an estimated two pairs. Numbers can be variable from year to year so there is still hope for better news in 2023.
Upland sandpipers typically require a minimum of 100 acres for breeding habitat and so large expanses of open, grassy land is a high priority. Over the past five years, long term efforts have been ongoing to complete a large-scale grassland restoration at the McGuire Airfield. So far, roughly 500 acres have been converted to native warm season grasses with another 100 acres to be completed by next spring. Our goal is to help create and maintain grassland bird nesting habitat for Upland sandpipers and other species.
The cold and dreary winter weather makes for the perfect excuse to curl up with a book. Reading a good book can transport you into new worlds, or, in the case of the following books I’m about to recommend, help you get excited about getting outside to explore your own winter wildland.
My first recommendation is a Field Guide, Tracking and the Art of Seeing: How to Read Animal Tracks and Sign written by Paul Rezendes. Although this is a field guide to tracking wildlife, this book includes personal accounts that make it much more readable cover to cover. The author includes several North American species including rodents, hoofed animals, bears, raccoons, opossums, and members of the weasel, rabbit, dog, and cat families. He describes not only the signs these animals leave but also their ways of life throughout the seasons to help the reader get a fuller picture.
