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.
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.
Pi Patel, one of the eight piping plovers chicks that fledged from the Barnegat Inlet Restoration site in 2021. Photo courtesy of Matt Reitinger.
The success of a habitat restoration project is typically measured in numbers, number of acres restored, the abundance of target species, breeding success of the wildlife using it, that sort of thing. And we certainly have good numbers for the Barnegat Light Habitat Restoration Project… 40 acres restored, including two foraging pond, five pairs of piping plovers using the site this year, a substantial increase from one pair just two years ago, and breeding success above the federal recovery goal and well above the state average for two years running since the project was fully completed.
But there’s more to the success than numbers, it can also be told through names. So first a disclaimer; we name our banded piping plovers in New Jersey. This practice is sometimes frowned upon by other researchers who fear anthropomorphism undermines their scientific credibility or leads to misunderstanding about biological processes. Point taken, but in the case of piping plovers, we believe naming can potentially lead to better engagement in their conservation through dynamic outreach, much the way Monty and Rose, Chicago’s famous plovers have garnered huge public support. Also, in New Jersey our banded plovers typically have four bands, so it is much easier for our monitoring staff to identify and communicate about a bird named “Major Tom” than orange over light blue (left), orange over black (right). Finally, some people are just plain curmudgeons about this issue, but endangered species recovery work is hard, so having a little fun with it isn’t such an awful thing! So, let’s get to the names and the “stories” they tell.
Rose at Chicago’s Montrose Beach, July 2021. Courtesy of Tamima Itani.
Monty and Rose were hardly strangers when I finally met them “in-person”. I had been admiring Chicago’s famous pair of piping plovers for nearly two years. I had read the adoring newspaper headlines about them and followed them closely on social media. I had seen, even hosted a screening for the short film made about their story. I proudly wore a hat emblazoned with their colorful logo.
From a strictly biological perspective, Monty and Rose aren’t much different than any other piping plovers; they have the same distinct markings, exhibit the same behaviors, and face the same threats that have landed plovers on the endangered species list. But there is nothing ordinary about this pair when it comes to the attention afforded them and the excitement they’ve created.
So early this summer I found myself on a plane headed to Chicago to experience the Monty and Rose phenomenon firsthand. Along for the pilgrimage were Kashi Davis and Emily Heiser, who head up New Jersey’s beach nesting bird program, and with whom I’ve share nearly my entire career. With nearly 60 years of “plovering” between us, you wouldn’t think we’d have much to learn from yet another pair of plovers. To be honest, the trip was as much about being inspired by Monty and Rose and the people involved in their story, as it was about anything else. But on the practical side, I was especially interested in how they managed to pull off a dawn to dusk volunteer monitoring program from incubation to hatch to fledge. And I really wanted to know how they generated all that excitement.
The novelty factor accounts for some of the appeal, the first plovers nesting in Chicago in many decades. But interest in Monty and Rose has continued to rage on several year running now, and a second film is scheduled for release in September, so it isn’t just that. Improbability also plays a part, a small pair of shorebirds and their even tinier chicks nesting on a busy city beach in the shadow of skyscrapers. The naming of the birds, a reference to Montrose Beach, where they nest, also seems to play an important role in the connection people feel for them. There is a great sense of pride – they are their plovers. And with just one pair at this site (and in the entire region), all the attention is funneled to them.
You feel the excitement the moment you walk on “their” beach. People constantly pop by to ask how Monty and Rose are doing. The volunteer monitors happily trade personal stories about them or offer a look in their scope to get a closer peak. Strangers wander over to ask what everyone is looking at. We met Bob Dolgan, the creator of the Monty and Rose film (and its upcoming sequel), and Tamia Itani, the pair’s “plover mother”, organizer of the volunteer effort, and now author of a Monty and Rose children’s book. Both had their own take on why the Monty and Rose story has gone viral, although I’m not sure I’ll ever know exactly what that “secret sauce” is. No matter, I left Chicago completely inspired by Monty and Rose and their protectors, recharged and ready to carry on with my own plover projects back home.
A few days after returning from Chicago, I took a day trip up to Gloucester, Massachusetts to meet some members of another piping plover volunteer group. Like the Monty and Rose crew, they annually help shepherd one pair of plovers (actually, they have two pairs this year) through the perils of nesting on a city beach, although Good Harbor Beach is decidedly quieter than Montrose Beach in Chicago, at least on the mid-week morning I visited. This group also manages to staff the beach with monitors from dawn to dusk on most days and has its own Facebook page that it maintains to educate the public and generate enthusiasm for their community’s plovers. They have been doing this longer than the Monty and Rose effort, but quietly out of the spotlight. They proudly wear their Piping Plover Ambassador badges.
Seeing those badges made me realize that although the Monty and Rose story has been invaluable for creating interest in plover conservation – piping plovers are definitely having a “moment” thanks to their story – it’s the hundreds of monitors who are the real piping plover ambassadors. I started my own “plover career” 28 years ago as a volunteer. I was immediately and inexplicably smitten by piping plovers, although I didn’t realize it would completely change my life. I’m just as captivated by piping plovers today and I remain equally inspired by my fellow protectors, paid and volunteer, who steadfastly fight to help maintain a place for piping plovers in our world. And provide them a voice.
Conserve Wildlife Foundation’s Delaware Bay Shorebird Stewards will be on Restricted access beaches in Cape May and Cumberland Counties from May 15th through the 31st. We will be educating beach goers about the horseshoe crabs and shorebirds.
Plan a visit to the bay in May to witness this spectacular wildlife phenomena!
USGS scientists study the nesting habitats of Atlantic Coast piping plovers. This unvegetated patch of sand and gravel allows piping plover chicks and eggs to hide from predators. (Credit: Susan Haig, USGS. Public domain.)
CWF’s on-the-ground conservation efforts, such as the deployment of fence and signage to protect piping plover nesting areas, often get the most attention, and for good reason as our frontline work is one of the most important things we do. At the same time, we are involved in a number of other strategies to protect at-risk species and track their progress towards recovery.
Our biological monitoring data are also used by scientists to support their research; such was the case with a research paper recently published by the USGS and USFWS that looked at nesting habitat used by piping plovers in different portions of the Atlantic coast breeding range, including here in New Jersey.
Researchers concluded there were significant differences in the type of habitat selected by plovers depending on the region where they nested, which has important implications for land use/management policies and can help inform habitat restoration projects.
Read the United States Geological Survey’s story below.
Piping plovers, charismatic shorebirds that nest and feed on many Atlantic Coast beaches, rely on different kinds of coastal habitats in different regions along the Atlantic Coast, according to a new study by the U.S. Geological Survey and U.S. Fish and Wildlife Service.
The Atlantic Coast and Northern Great Plains populations of the piping plover were listed as federally threatened in 1985. The Atlantic coast population is managed in three regional recovery units, or regions: New England, which includes Massachusetts and Rhode Island; Mid-Atlantic, which includes New York and New Jersey; and Southern, which includes Delaware, Maryland, Virginia, and North Carolina.
While the Atlantic populations are growing, piping plovers have not recovered as well in the Mid-Atlantic and Southern regions as they have in the New England region. The habitat differences uncovered by the study may be a factor in the unequal recovery.
USGS studies nesting habitats of the threatened Atlantic Coast piping plover population to help inform species recovery plans. (Credit: Susan Haig, USGS. Public domain.)
Piping Plover walks through a tidal pool. Photo courtesy of Northside Jim.
Any day now the first piping plover will be returning to New Jersey to nest. It will likely return to the same beach it nested on in previous years, possibly even the same part of the beach. It will be coming from the same wintering location it used in the past. And it probably even used the same stopover sites during migration. This attachment to place or “site fidelity” is one of the marvels of the birding world, not unique to plovers.
In some ways, it’s not so different for us. We order pizza from the same restaurant, time after time. Many of us vacation in the same place, year after year. And yes, we have been known to repeatedly visit our favorite beach. My parents took my sister and I to the beach at Seaside Heights for summer vacation every year when we were growing up. We went on the beach at the same street access, laid our blanket out at pretty much the same spot, ate at the same place on the boardwalk, EVERY time. It wasn’t until I became an adult that I realized I could travel or vacation elsewhere, and so I began visiting places far away, first Los Angeles and the Pacific Ocean, then the desert Southwest, and onto a lifetime of travel to “far flung” places.
And this is where the analogy with piping plovers ends. Plovers don’t travel on a whim. They can’t decide to fly to the west coast this year instead of their usual Atlantic Coast breeding locales. They are hard-wired for efficiency, their behavior is driven by survival and maximizing reproductive success. They return to the same beach because they know there is suitable nesting habitat and good foraging opportunities there, and “knowing that ahead of time” gives them a breeding advantage over other, younger plovers looking for and trying to establish new territories.
Piping plovers do have some capacity for change. They can shift locations if needed, especially if there is a significant alteration to their existing habitat, severe beach erosion, for example, or if they lose a mate in a given year and need to find a new one. There are, however, limits to this. They are “specialists” that require specific habitats and conditions. Furthermore, recent research on the wintering grounds suggest they will remain at the same location even if it is highly disturbed, and even if it negatively impacts their fitness. So, site fidelity usually trumps other factors.
Of course, all of this has conservation implications. Here in New Jersey, development at or near the beach has already limited both the amount and quality of beach habitat available for them to breed. Even if they wanted to “travel elsewhere” they don’t really have an option of other suitable places to go. And, the beaches remaining for them to use, with rare exceptions, are busy with people, which is not a good recipe for a species highly vulnerable to human disturbance. Still, given what we know about site fidelity, our best option is to “pull out all the stops”, put the strongest protection measures in place, at the sites that are left for them to nest.
This is what keeps me up at night, even after more than 25 years on the job. New Jersey is a tough place for piping plovers to succeed. It is not necessarily a losing battle, but it hasn’t always been a winning one either. As I gear up for another breeding season, I know that I and the dedicated community of other plover monitors will do everything we can to protect them and try to secure their future. But…we need your help too. Stay out of the fence or barriers erected to protect their nests, leave your dog at home, off of nesting beaches, and keep your distance when flightless chicks move outside the fence to feed at the waterline. Please enjoy them, but carefully and at a distance.
This reminds me of the lessons we’ve learned with the Covid pandemic this past year. We can’t beat it alone; we need to work together. We have to take actions that help each other, not just ourselves. This is the model for piping plover conservation too. We will keep protecting them, but ultimately, we need everyone’s help if piping plovers are going to succeed and eventually recover.
Portion of flock coming in for a landing. Photo by Chris Johnson
Starting in 2011, Conserve Wildlife Foundation of NJ, led by Senior Wildlife Biologist Todd Pover, has been working in the Bahamas, primarily Abaco, to help study the habitat and distribution of wintering piping plovers.
Band resighting surveys are one of the important aspects of this work. As a result of severe damage from Hurricane Dorian in 2019 and current safety issues due to the Covid pandemic, regular surveys were not conducted this winter, either by CWF or the group of local volunteers who have assisted over the years.
With this in mind, we were delighted to get a very late winter report from Chris Johnson, a local resident and accomplished young birder. You can read his account of the survey and enjoy his photos below.
On February 26th, 2021 a large group of Piping Plovers was sighted and documented on a sand flat near Cherokee Sound on the island of Abaco in the Bahamas by local residents Christopher Johnson and Michael Knowles. The flat was teeming with bird life as many migratory shorebirds were preparing to begin their journeys back to the breeding grounds. Short-Billed Dowitchers, Black-Bellied Plovers, Least Sandpipers, and Semipalmated Sandpipers were a great find. However, the pinnacle of the birding trip was a grand total of 46 Piping Plovers!
Among the 46 plovers were three notable, returning plovers, recognizable from their leg bands: Squid (Right Leg-Green over Red, Left Leg-Blue over Black), Joe (Green Flag 70E) and White Flag 36. The behavior of these plovers surely indicated that they are on the brink of beginning their migrations northward. Many were beginning to gain their summer breeding plumage and were feuding over crustaceans and worms, while others were bickering for a mere resting place.
“Squid”
“Joe”
“White Flag 36”
The substantial group of plovers stuck around on the sand flat that was slowly diminishing due to the rising tide and continued to rest and feed on the flat for another 25 minutes. It was apparent as the first flock congregated and took to the wing due east that they were bound for their roost in nearby Casuarina Point. After the majority group of 30, including Joe and White Flag #36 departed, a small group of 16 remained resting on the last segment of the flat. Within another ten minutes the second group of plovers had hightailed it for the Cherokee Creek System. The “Cherokee Group”, including Squid, would vanish into the dense mangrove ecosystem to get a good night’s rest.
A group of this size would suggest that many of these birds will begin their migrations back north within the coming weeks. Hopefully a successful breeding season lies ahead!
Piping plover marches along the beach. Photo by Chris Johnson.
