The well-known Piping Plover pair, Joey and Hamlet, has been monitored by Conserve Wildlife Foundation of New Jersey (CWF) at the Sea Girt National Guard Training Center (NGTC) for three nesting seasons (check out our last blog on Joey and Hamlet’s arrival here!
Something unusual and exciting has happened just off the coast of New Jersey; a new island that has become a haven for birds has formed. Located on the southern edge of the Little Egg Inlet, the island is about 1000 feet offshore of Little Beach Island, a Unit of the Edwin B. Forsythe National Wildlife Refuge (Refuge). Of course, it didn’t form overnight, an emergent shoal has been noted in that location since about 2018, and it has slowly been growing, likely as a result of the longshore drift of sand from Long Beach Island. The island, dubbed Horseshoe Island because of its distinctive shape, provides incredibly valuable habitat for nesting and migratory birds, including many at-risk species.
Shorebirds along Delaware Bay: photo by Shorebird Steward Bob Bocci
May is wonderful time of year at the Delaware Bay. Horseshoe crabs are spawning and shorebirds stopping over on their migration to feed on the eggs. One of these shorebirds the red-knot, is a federally threatened species. Beaches along the Delaware Bay in New Jersey are extremely important stops in their migration. Many of these beaches have been restricted from May 7th to June 7th to allow the shorebirds to feed undisturbed. They need to gain enough weight to be able to fly non-stop to their breeding grounds in the artic.
photo by Shorebird Steward Dom Manalo
People come from all over to view this natural phenomenon and the Delaware bay is a popular tourist destination. It’s important to have Shorebird stewards on these restricted beaches to educate the public about the crabs and shorebirds. Shorebird stewards support beach restrictions by being present at closed beaches during shorebird season to ensure that resting and foraging shorebirds are not disturbed. This job includes educating beach visitors as to why the beaches are closed and the importance of the beaches to horseshoe crabs and migrating shorebirds.
Stewards are needed short term in May at beaches along the Delaware Bay in Cape May County from the Villas north to Reed’s Beach and beaches in Cumberland.
Please contact Larissa Smith at Larissa.Smith@conservewildlifenj.org for more details.
Flock of wintering piping plovers in the Bahamas – plovers grouping close together as the tide closes in on the foraging flat.Photo Coutesy of Keith Kemp.
Just a few hours after landing on the island of Abaco in the Bahamas in early February, I had my scope focused on several dozen piping plovers scurrying across an expansive sand flat. This was good news; the foraging flat still supported a healthy number of wintering plovers. The last time I had been at this site was almost exactly three years ago. A lot has happened since then.
On September 1, 2019, a major Category 5 storm, Hurricane Dorian, struck and lingered over the island of Abaco, and then Grand Bahama, bringing with it sustained winds of 185 MPH and gusts of 220 MPH, the strongest storm on record to hit the Bahamas. As expected from a storm of this intensity, lives were lost and devastating damage occurred to buildings and infrastructure. The natural environment took a beating too. As just one example, the pine forests, typical of these two Bahamian islands, that were in the direct path of the storm were nearly entirely destroyed – even today, 2 ½ years later, the sight of a “ghost forest” as far as the eye can see is a shocking sight.
Although the Sea Girt National Guard Training Center (NGTC) has just a small section of beach to manage, their efforts there with threatened and endangered species has been big. Conserve Wildlife Foundation of New Jersey has been a partner in these efforts, monitoring the piping plovers that nest on this beach during the breeding season and assisting in the planning of habitat enhancements. The protection area at the NGTC has been the nesting site of a piping plover pair for the past three breeding seasons and it is likely they will return again this spring, all while supporting the military and recreational missions of the New Jersey Army National Guard.
Most people are surprised to hear that American oystercatchers are present in New Jersey in the winter. They usually associate the charismatic shorebird as a breeding species here. Our state’s wintering oystercatchers, a combination of breeders from further north and our own, are at the northern extent of the Atlantic coast wintering range.
One of the hundreds of least tern chicks at the Pt. Pleasant colony in 2021. Courtesy of Lindsay McNamara.
With 2021 coming to an end, we thought it would be fun to look back at this year’s beach nesting bird season in New Jersey, focusing on some of the surprises.
At the top of the list is the huge jump in our piping plover breeding population, up to 137 pairs from just 103 in 2020, an unprecedented 33% increase in one year and the third highest on record for the state since federal listing. This was a much-needed bump, as productivity has been high over the past few years, but we weren’t seeing any sustained growth in the population as a result as would be typical. So, when the final pair number was tallied this year, we were both relieved and surprised at how big it was! The challenge now will be to maintain that higher level or increase it even more, as it has fluctuated up and down quite a bit in recent years.
Congratulations to Luke Tan for having his photo Semipalmated Sandpipers Feeding win Runner Up in the Student Category for NJ Monthly’s Cover Search Competition. Luke volunteers as a CWF Shorebird Steward on the Delaware Bay during the spring shorebird migration. He captured this photo while on Reed’s Beach, Cape May County.
Pair of Piping Plovers Tending Nest. Courtesy of Northside Jim
The 2021 New Jersey piping plover breeding season was a classic “good news, bad news” result. According to the annual report released by the state’s Endangered and Nongame Species Program earlier this month, the breeding population increased to 137 pairs in 2021, third highest since federal listing in 1986. That is an unprecedented 33% rise over the previous year and just short of the record high of 144 pairs in 2003. On the downside, the number of chicks fledged statewide was just 0.85 chicks per pair, the lowest since 2013 and about half of the 1.50 federal recovery goal. The low productivity was largely the result of a severe Memorial Day weekend nor’easter and persistent predator activity throughout the season.
Holgate, a unit of the Edwin B. Forsythe National Wildlife Refuge, hosted 46 pairs, the most in the state. This site, which is monitored and managed by CWF through a cooperative agreement with the Refuge, has seen an astounding increase in piping plover pairs in recent years, up about 2.5 times from the 18 pairs it had in 2018. CWF also monitors Little Beach, the adjacent Refuge-owned site, where another 13 pairs nested in 2021. Combined the two sites had 59 nesting pairs, a new record, by far, for the Refuge. Unfortunately, like the statewide results, productivity was very low this year at both Refuge sites, combined only 0.80 chicks fledged per pair, about half the rate just a year ago. The Memorial Day weekend nor’easter flooded those sites, wiping out most nests, and although most of the pairs nested again afterwards, many of those renests (or hatched chicks) were lost to predators, especially coyotes at Holgate.
CWF also oversaw piping plover breeding at the National Guard Training Center, which had just one pair in 2021, but that nest successfully hatched and fledged three chicks, helping boost the state average. Overall, CWF was responsible for monitoring 44% of the statewide population, giving it a significant role in helping guide conservation of this highly vulnerable state endangered (and federally threatened) species.
Although CWF does not conduct the daily on-the-ground monitoring and management of piping plovers at the Barnegat Inlet nesting site, it was a co-leader of the habitat restoration that was completed there two winters ago, and as such has had a big role in the nesting outcomes at the site. The number of pairs using the site has noticeably grown, up to five pairs in 2021 from just one pair when the project began. Productivity has also been consistently high at the restoration site and 2021 was no different with the pairs exceeding the federal recovery goal and statewide average with 1.6 chicks fledged per pair this year.
With the breeding results for 2021 now “in the books”, we are already looking forward to next year. The biggest question will be whether the state can sustain the progress towards recovery it made this year, especially given the big drop in productivity, which typically drives population. But for now, all we can do is wait until next spring to learn the answer to that question.
To read the state’s entire 2021 piping plover report:
American oystercatcher foraging for oysters along the Delaware Bay. Photo credit: Meghan Kolk.
The Delaware Bay is well known for the spectacular phenomenon of spawning horseshoe crabs and migrating red knots every May, but in recent years the American oystercatchers (Haematopus palliatus) have also discovered the allure of the Bayshore and made it their home. American oystercatchers, a State Species of Special Concern, have been monitored and managed by CWF and the NJDFW’s Endangered and Non-game Species Program along the Atlantic coast beaches for nearly two decades, resulting in a steady population increase. However, the population that breeds along the Bayshore, first documented in 2016, has not received the same attention and had never been fully surveyed until this year.
CWF’s interest in this newly discovered population led to a small pilot study of a few known breeding pairs in 2018. Then this past May, we launched a bay-wide survey of the sandy beaches of the New Jersey side of the Bay from Cape May Point up to Seabreeze, the northernmost beach in Cumberland County. The purpose of the bay-wide survey is to determine a baseline of the number and distribution of breeding pairs along the Bayshore. The data gathered from this survey will add to the Statewide population estimate and help determine the amount of time and funding needed to fully monitor and manage the Bay’s population. More monitoring will be necessary to assess risk factors and reproductive success. Reproductive success can then be maximized by managing for risk factors such human disturbance, predation and tidal flooding.
This survey was made possible due to the efforts of dedicated volunteers and could not have been completed without their help. Unlike the Atlantic coast, the Bayshore beaches are often difficult to access, and many can only be reached by boat, making this survey more challenging. In fact, two sites that we planned to survey proved to be too difficult to reach and were skipped for this year. Each of the 33 remaining sites were surveyed just once within a specific timeframe, giving only a snapshot of the breeding season. We hope to be able to collect much more information in the future when more funding for this project is available. Based on the survey that was conducted, 13 pairs were documented at 8 different sites and 8 nests were documented at 5 different sites.
In addition to the formal survey, I was able to collect some observations as I spent every day in May on the Bay working with red knots. I took notice of the prey items that the oystercatchers were choosing. I often observed them feasting on oysters, which were plucked off exposed rubble at low tide. They also spent time at the man-made oyster reefs that were constructed at several beaches to act as breakwaters to slow the erosion of beaches. They also favored ribbed mussel beds, which become exposed as the tide recedes. The most interesting foraging behavior I witnessed was an oystercatcher plucking a fresh slipper shell off a horseshoe crab as it came to shore to spawn. It seems the Bay offers a variety of good food sources for a bird that mainly preys on bivalve mollusks.
I also noticed that flocks of up to 11 oystercatchers were traveling together up and down the Bayshore. This is a peculiar behavior since oystercatchers are highly territorial during the breeding season and are typically only seen in flocks once the breeding season is over. Could it be that the Bayshore is a popular spot for non-breeding young adults to hang out?
So much more research is needed to answer the many questions we have about the mysterious Bayshore oystercatchers.