In late 2024 we closed out our third year of comprehensive monitoring and management of nesting and migratory birds at Horseshoe Island. The recently formed island, situated just outside the southern edge of Little Egg Inlet, has quickly become one of the most important beach nesting bird sites in New Jersey.
Each year has presented new challenges and changes on the island and in 2024 there were a number of “firsts” to report. Piping plovers had previously utilized the island to rest and forage during both the migration and breeding seasons, this was the first year that they nested there. Adding any new nesting site for piping plovers in New Jersey is big news, adding three pairs was even more exciting. Although all three pairs hatched young, no chicks successfully fledged from the island, but we hope to build on that initial success next year.
Horseshoe Island is home to the northernmost royal tern colony in the hemisphere and the colony has grown in size each year. In 2024, CWF joined New Jersey Fish and Wildlife (NJFW) and The Wetlands Institute (TWI) to band royal tern chicks, the first time that royal terns have been banded in the state. With their newly minted blue field readable bands, we are now able to track movements and longevity of “our royals.” Under NJFW’s direction, adult piping plovers were also banded at Horseshoe for the first time this year. Lastly, led by TWI, black skimmer chicks were once again banded on the island.
Royal terns nesting at Horseshoe Island, the northernmost colony in the hemisphere. Photo credit: Emmy Casper
The island grew exponentially this year, it is now at least twice the size it was when monitoring began in 2021. The birds took advantage of the expanded habitat, upwards of 1400 state endangered black skimmers nested there in 2024, easily making it the largest skimmer colony in the state. And nearly 600 skimmer chicks fledged from the site, making it the most successful year to date for skimmers on Horseshoe Island. Large least and common tern colonies were also present. And American oystercatchers have increased from 6 to 16 breeding pairs since 2021; 2024 being the most productive year yet with 24 fledglings being recorded. Nearly every part of the island was in use, even more so if you factor in migratory and staging shorebirds that often crowd the tidal zones on the outer edges of the island and the interior lagoons for foraging.
Aerial view of Horseshoe Island in May 2024, looking east. Photo credit: Sam Galick
Monitoring and management of the island is done as a partnership between CWF, NJFW, and Edwin B. Forsythe National Wildlife Refuge. For more information about the island, read the recently released 2024 report.
This marked my second year attending the Northeast Bat Working Group’s (NEBWG) annual meeting, a highly regarded 3-day event that convenes researchers, biologists, and educators to address the challenges bats face across North America. As in previous years, the meeting proved to be both inspiring and thought-provoking.
Discussions centered on the primary threats to bat populations, including white-nose syndrome, habitat loss, climate change, and collisions with infrastructure such as wind turbines. Attendees presented their research, proposed innovative solutions, and collaborated on strategies to mitigate these pressing issues. Sessions covered a diverse array of topics, from advancements in bat rehabilitation techniques to improved methods for monitoring populations and assessing the impacts of climate change.
CWF has played a major role in helping monitor breeding American oystercatchers in New Jersey ever since surveys were initiated in the state just over two decades ago in the early 2000’s. Most of the statewide effort, conducted by a variety of partners, has been focused on pairs nesting on the sandy barrier beaches of the Atlantic Coast, in conjunction with efforts there to monitor and manage other beach nesting birds, such as piping plovers and least terns. These sites are often those beaches that are highly recreated and most used by beachgoers, public beaches where these species need added protection to hatch nests and raise their young chicks.
Leah grew up in Sussex County, where she enjoyed spending her time as a child and adulthood outside in nature. She graduated from Rutgers with a bachelor’s degree in Ecology, Evolution and Natural Resources. In 2019, Leah joined Conserve Wildlife Foundation as an intern, in 2020 she then became a part-time employee and this past March became a full time wildlife biologist.
My name is Kaiulani and I am the newest beach nesting bird crew member for CWF this year! I was super excited to get back in the field and this job offered a great opportunity to gain experience working with new birds, as well as help with the conservation efforts to protect their breeding habitats.
Welcome back to the second season of American Oystercatcher monitoring on New Jersey’s Delaware Bay beaches! CWF, and our partners at the Wetlands Institute and USFWS, have returned to the Bayshore to continue our research project funded by the National Fish and Wildlife Foundation (NFWF). Last year, the CWF-led team surveyed 29 miles of Bayshore beaches, monitored 19 nesting pairs, banded seven adults and four chicks, and conducted invasive species removal. This year, we’re excited to build on that progress and learn more about this previously understudied oystercatcher population.
Supporters who follow Conserve Wildlife Foundation across our social media platforms may have noticed that our channels became a bit less feather-y and more froggy in early May. This “takeover” was not just an acknowledgment of frogs and salamanders resuming their activities after winter brumation; however, you can expect the greatest diversity in the evening chorus this month with all native species besides mid-Atlantic coast leopard and wood frogs regularly calling. Rather, our shift in theme was in support of two international campaigns, Salamander Saturday and Amphibian Week, which aim to raise awareness for the most globally threatened class of vertebrates.
The Foundation for the Conservation of Salamanders (FCSal) began the Salamander Saturday initiative in 2015 and has annually encouraged other organizations around the world to help “Keep the World Slimy” through outreach events. This year, several zoos, nature centers, parks, museums, and even a brewery joined in the festivities by offering interactive exhibits, walks, crafts, and more for their patrons on May 4th. In addition to live activities, FCSal urges the use of #SalamanderSaturday on Facebook and Instagram to disseminate information far and wide.
While CWF’s work focuses on large-bodied mole salamanders, New Jerseyans are lucky enough to share the landscape with 16 species ranging from the tiny four-toed salamander (~2”) to the Eastern tiger salamander (~8”). Of these, nine are currently being monitored as endangered, threatened, species of concern, or species of interest, largely due to habitat loss and fragmentation. While you may not see them often, salamanders do a lot for our planet. They play an important role in the food chain as both predator and prey, contribute to carbon sequestration, aerate the soil, and more. Salamanders are also fascinating creatures. Though they do not coexist peacefully within flames as myths and legends suggest, they do share something in common with embers in that they “glow”. Scientists have not cracked the code on why but have found that many species bio fluoresce under different wavelengths of light. The bright colors and patterns frequently featured on their skin can be indicative of toxins and they are experts in regeneration, which could hold clues for medical advancement. Check out the infographic we created for this year’s celebration.
Infographic created for CWF’s Salamander Saturday Celebration
Amphibian Week was started by the Partners in Amphibian and Reptile Conservation (PARC) in 2020 and spans the first full week of May each year (the 5th– 11th in 2024). Activities occur in virtual and live capacities but are inspired by a unique theme that is selected in advance by PARC. In recognition of the upcoming summer Olympics in Paris, this year’s concept was Extreme Athletes: Amphibian Edition. Daily prompts included an opening ceremony, a warm-up day, aquatic, gymnastic, and track & field “events”, awards, and a closing ceremony.
CWF’s Amphibi-Olympics opened with the recitation of our amphibian anthem by a Fowler’s Toad (we knew that scream would capture your attention) and the torch lighting by a legendary fire salamander.
CWF interns, Connor and Nikki, had fun getting creative with the theme and sharing all the knowledge and admiration that they have for frogs and salamanders with our followers on Facebook and Instagram during our Amphibi-Olympics. After an evaluation of the adaptations our native amphibians have evolved to excel at life in water, on land, and in the trees, the bullfrog, Pine Barrens tree frog, and spring peeper took home the gold in the aforementioned “sports”. To add to the fun (and to accurately represent our life in the field where dad-jokes are applauded), each day included an amphibious pun. See our social media (@wildlifenj) for all the knee-slappers but here’s a curated selection:
What do you call a hard-working female carpenter frog? Rosie the Ribbiter!
Why was the Eastern spadefoot late to work? His vehicle was toad!
What did the frog driving school instruct their students before getting behind the wheel? Cricket or Ticket!
The medalists from the Track & Field event take to the podium, with the spotted salamander taking bronze, the wood frog securing silver, and the spring peeper getting gold.
While Salamander Saturday and Amphibian Week are fun and entertaining excuses to share the trivia and photos we amass throughout our field seasons, they are rooted in a not-so-fun and entertaining truth: over 40% of amphibians worldwide are currently on a path toward extinction. The amazing adaptations that enable them to inhabit both water and land make them more sensitive than other types of wildlife to changes in our environment… and our environment is changing. Decline is rapid and very concerning. But you can help! Become an Amphibian Ally by instituting small changes that can add up. Here are some ideas:
Drive cautiously during the migration seasons.
Leave piles of leaf litter around in the fall.
Reduce the use of chemical fertilizers and pesticides you apply on your property- they can change the chemistry of breeding pools and reduce or eliminate reproductive potential.
Enjoy ATVs on trails – not by driving through pools and puddles!
Celebrate amphibians from a respectful distance unless you are actively assisting one in crossing a road or have to touch them for scientific research.
Spend time hiking along streams/fishing? Decontaminate your shoes and gear to prevent the spread of diseases. Check out PARC’s guide on how: https://www.youtube.com/watch?v=ax6dx72xOCQ
Talk about amphibians! Educate your friends, family members, students, neighbors, etc.
Interested in donating toward conservation efforts? Consider specifying amphibians as the beneficiaries as they are incredibly difficult to find grant funding for.
Want to learn more? In addition to following along with CWF’s work, PARC is a fantastic resource to stay up to date on amphibian and reptile news. Sign up for their newsletter here: https://parcplace.org/network/join-parc/
Nothing makes our Herp Team (L-R: Staff Intern Connor Zrinko, Wildlife Biologist Christine Healy, Senior Intern Nikki Griffiths) happier than the quonk of our gold medalist in the Gymnastics division, the Pine Barrens tree frog!
Every week is Amphibian Week for our Herp team. We’re grateful to FCSal and PARC for putting a larger spotlight on these animals and to all of you, who took the time to learn and spread the message this month.
by Robert Criollo and Daniel Turcios, GIS Program Managers
In the world of Biotics, it all starts with one upload. An observer can come across the species wandering the forests of New Jersey and snap a photo of it. From there, they upload it to the New Jersey Wildlife Tracker.
A few tracked species are: Eastern Box Turtles, Bobcats, Peregrine Falcons, Red Knots, and Pine Barrens Treefrog.
On rainy spring evenings, have you ever encountered large numbers of salamanders and frogs crossing the road? Do you ever wonder where they came from and where they are going? New Jersey’s forests are home to a group of amphibians that breed in small, temporary wetlands called vernal pools. Within northern New Jersey, this group includes wood frogs, spotted salamanders, and Jefferson salamanders.
These salamanders are elusive, often concealed under foliage, moss, or in burrows created by small creatures. They belong to the Ambystomatidae family, earning the nickname “mole salamander” due to their subterranean tendencies. Feeding primarily at night on various invertebrates like earthworms and insects, they, along with wood frogs, play crucial roles in forest ecosystems as vital links in the food chain and are indicators of ecosystem health. Emerging from winter hibernation during rainy nights in late winter and early spring, they embark on journeys to vernal pools for mating and egg-laying, marking the onset of the amphibian migration.
In today’s world, it’s pretty difficult to think of a species that scientists are not concerned about in the face of climate change. The reasons are many and diverse, but in a state where 42% of municipalities are considered “coastal”, it comes as no surprise that sea level rise (SLR) is a big threat here- both to people and wildlife. When the average person imagines which species are most likely to be impacted by SLR, it’s likely that beach nesters, including piping plovers, immediately come to mind. Afterall, they occupy the same environments that recreationalists are worried about losing. Valid point- but they are not the only ones. Eastern tiger salamanders, one of New Jersey’s rarest amphibians, also make the list.
Like our other mole salamanders (spotted, blue-spotted, marbled, and Jefferson), Eastern tiger salamanders require access to temporary wetlands, called vernal pools, to successfully breed. The ephemeral nature of these water bodies is critical because it eliminates fish as potential egg predators and thus increases larval survival. While these salamanders spend much of the year in forested landscapes, adults return annually to their natal pools (in most cases) to reproduce. High fidelity to these sites can put these amphibians in danger if development occurs within their migration corridors or changes transpire within the pools themselves.