Piping Plover with Injured Wing at Cape May Point State Park
There is no way to sugar coat it – this has not been a stellar year for piping plovers in New Jersey. Due to a number of ill-timed severe storms, high tides, and heat waves, chick productivity was low this year. There was some comfort in knowing that these events were largely out of our control, so at least it wasn’t something we could have prevented. At the same time, there is a nagging feeling that years such as this are the new “normal” as we enter an era of climate change where more extreme weather is predicted.
While there were a number of tough moments throughout the season, one incident was especially frustrating for the staff. Several days after a piping plover chick reached its fledge (flying) date at Cape May Point State Park, where it had battled marauding crows for over a month, CWFNJ field technician Sarah Scheffer discovered the fledgling dragging its wing. This is never a good sign – usually it indicates a broken wing. Fortunately, because we monitor the site daily, we caught the problem immediately. Continue reading “PIPING PLOVER BREEDING UPDATE”
Dr. Virzi and Stephanie Egger (CWFNJ) banding an American oystercatcher chick.
By Stephanie Egger, Wildlife Biologist
Conserve Wildlife Foundation of NJ (CWFNJ) and the NJ Division of Fish and Wildlife – Endangered and Nongame Species Program (ENSP) assisted in the banding of American oystercatchers chicks and adults this week. Oystercatchers in New Jersey are banded as part of a long-term mark recapture research project by Dr. Tom Virzi of Rutgers University in collaboration with CWFNJ and ENSP. One breeding adult that was recaptured yesterday was originally banded over a winter in Georgia! Data collected included band color and combination, sex, age, weight, other physical measurements (wing, head, culmen, nares, leg) and a feather sample for DNA purposes. Check out our video from that day!
Over the last few years, widespread mark recapture efforts along the Atlantic coast have revealed connections between breeding and wintering sites and information of the complexity of patterns of movement and dispersal. For more information on the New Jersey data and other state efforts please see the American Oystercatcher Working Group website.
Pam Prichard (Monmouth County Monitor for ENSP) ready to release the American oystercatcher chick after all data was collected.An adult American Oystercatcher originally tagged in Georgia, breeding in New Jersey.An adult American Oystercatcher originally tagged in Georgia, breeding in New Jersey.
The month of April has provided the first nests from our beach nesting birds! The first nest found belongs to the American oystercatcher, a species of concern in New Jersey. Like our other nesting shorebirds, the eggs are well camouflaged on the beach. We use symbolic fencing (string and posts) with signs to protect their nesting areas and to alert the public of their presence.
An American oystercatcher nest with 2 eggs.American oystercatcher nesting area with protective fencing.
Piping plovers and American oystercatchers have already begun to return to New Jersey to breed. Least terns and black skimmers will follow in another couple of weeks. This is a busy time for the Conserve Wildlife Foundation’s (CWF) Beach Nesting Bird Project – our program to protect these birds, some of the state’s most at-risk species, kicks into high gear as the birds arrive.
Employees from the Edison, NJ and Philadelphia, PA offices of CDM Smith who helped put up fence and signs at the Belmar Shark River Inlet nesting area.
The first major task at hand is to protect the habitat where the birds nest from human disturbance associated with intensive recreational use of our beaches. Working closely with the New Jersey Division of Fish and Wildlife, CWF typically helps fence off and post 20-25 beach sites annually.
And we couldn’t complete this massive job without the assistance of volunteers. This year we have gotten volunteer help from a diverse group of organizations, ranging from the New Jersey Beach Buggy Association to Wetland Institute to Manasquan High School Environmental Club. A huge THANKS to all those groups and individuals that pitched in to help!
Click here to learn more information about our Beach Nesting Bird Program.
Last summer both New Jersey and Delaware had rare occurrences of sea turtles nesting or attempting to nest on their beaches. In Stone Harbor, New Jersey this past August, a sea turtle crawled onto the beach and dug two holes in an attempt to nest in an area fenced off for beach nesting birds. Unfortunately, the sea turtle did not lay any eggs and eventually crawled back into the ocean. Although no one witnessed the event, the turtle left strong evidence behind – its tracks! CWFNJ’s Beach Nesting Bird Program Manager along with other agency biologists was at the scene to evaluate the tracks. Each sea turtle species has a different track pattern and leaves behind a different shape at their nesting site (their body pit). It was determined that it was likely a state endangered loggerhead sea turtle (Caretta caretta) that attempted to nest. Continue reading “Rare sea turtle nesting!”
TRACKING THEIR PATH AS THEY HEAD SOUTH FOR THE WINTER
By Allison Anholt, Field Technician, (NJDFW) and Emily Heiser, Field Technician, (CWFNJ)
Color band being placed on oystercatcher chick at Stone Harbor, N.J.
Throughout the fall, there is a remarkable sight to see along New Jersey’s coastline. Thousands of shorebirds group together in huge flocks, using our state’s coastline as a migration stopover point to rest and feed. One particularly interesting shorebird is the American oystercatcher, which is listed as a species of special concern in New Jersey. At the Conserve Wildlife Foundation of New Jersey, we work with biologists from the New Jersey Division of Fish and Wildlife to survey these birds throughout the fall season.
The oystercatcher is an especially easy bird to survey during fall migration due to its distinct features. Not only do they stand apart from other shorebird species with their unique orange bill and striking coloration, but color bands help us determine individuals as well. Banding efforts have been underway in New Jersey since 2004 in order to give insight to researchers regarding the
oystercatcher’s breeding habits, pair behavior, and migration patterns. About 300 oystercatchers have been banded in New Jersey to date, including a significant percentage of the state’s estimated 400 breeding pairs. Continue reading “AMERICAN OYSTERCATCHERS TAGGED AND READY FOR MIGRATION”
"Bahama Mama" - If You Look Close, You Can Detect The Color Bands On her Legs
reported on a piping plover that had nested four times this
year. One reason we know so much about this individual bird is because it is one of just a few banded piping plovers found in New Jersey-it was originally banded in the winter of 2010 in the Bahamas.
This specific bird, dubbed Bahama Mama by our staff, was first observed this year at North Brigantine Natural Area on March 29. It spend the next several months finding a mate, laying and incubating eggs, and finally trying to raise young, a cycle that ended unsuccessfully near the beginning of August. Normally that would be the end of the story for this year, but because we are conducting post-breeding/migratory piping plover surveys once a week at this site through the end of October, we have more to report.
As of last week, Bahama Mama was still present at the same site, nearly two months after breeding concluded and six months after she first arrived. The fact that she has remained there well after the nesting season ended is a huge surprise and defies conventional expectations. We fully expected her to be on her way back to the Bahamas by now. Continue reading “Update from the field”
New Jersey’s Black Skimmers Survive Hurricane Irene
By Todd Pover, CWFNJ Beach Nesting Bird Project Manager
Black Skimmers liftoff at Seaview Harbor Marina where they survived Hurricane Irene.
Most of us spent the weekend worrying about the potential damage Hurricane Irene might inflict on our homes and loved ones. As a biologist, I was also concerned about the impact of the storm on our state’s wildlife, in my case, the beach nesting birds I help manage and protect.
Hurricanes and other severe weather can be a matter of life or death for nesting birds. Young chicks are particularly vulnerable, but even adults are at risk in the most extreme storms. Although most of our state’s beach nesting birds have completed the breeding cycle for the season, the majority of the Atlantic coast population of piping plovers and many least terns are in the midst of migration and would have been in the path of Hurricane Irene. We have no way of knowing for sure what impact the storm had on them, but long distance migration is tough on birds in the best of circumstances. Survival of young during their first year is typically very low so this was not a good start to the post breeding season.
We had two active nesting colonies remaining in New Jersey heading into the storm – a least tern colony at Townsend’s Inlet (Cape May County) and a black skimmer colony at Seaview Harbor Marina (Atlantic County). Residents in this area had a mandatory evacuation order, but our birds didn’t have that option. Today I completed an assessment of our beaches and nesting birds in the southern portion of the coast and I am happy to report that both the skimmer and tern colony escaped the storm largely unscathed.
Going into the storm, the tern colony was almost done for the season anyhow so any losses there would have been minimal. The skimmer colony, on the other hand, still had a number of chicks remaining and about 800 just fledged (able to fly) young. And over 1800 adults! This is the state’s only major skimmer colony representing nearly the entire state breeding population. So you can imagine it was a big relief when I walked out on the beach and heard thousands of raucous skimmers and saw there was no visible reduction in the colony’s size. Like our homes and loved ones, Irene appears to have spared our beachnesters.
New Jersey partners being honored at the Coastal America Award ceremony for the Lower Cape May Meadows restoration project (Stephanie Egger, second from the right).
As a new staff member of the Conserve Wildlife Foundation of New Jersey (CWF) a blog entry seemed like a good way to introduce myself. So here goes. “The wheel has come full circle,” meaning to go full circle, complete an entire cycle or to return to an original position, is an old adage thought to originate from Shakespeare in King Lear 5:3. Apparently there is some truth to this expression. I really didn’t see it coming though, especially not to my career, my passion, which has focused on endangered species, namely the piping plover, for the last five years.
I actually started working with piping plovers as a monitor for the Beach Nesting Bird Program in 2006. Fresh out of grad school, looking to get my foot in the door, I came across an opening to manage piping plovers on the Jersey shore. Perfect I thought! I can work on my tan while I’m working! Totally kidding! I have to admit at that point in my life I had never even heard of the infamous piping plover (I know, I still can’t believe it myself). How did I miss a bird that’s been protected under the Endangered Species Act since 1986 and nesting on the very same NJ beaches that I spent every summer vacationing since I was a toddler? My previous two years were consumed researching northern diamondback terrapins for my Master’s degree, but this opportunity seemed to be calling me. My then supervisor (CWF’s own Todd Pover, Beach Nesting Bird Program Manager), took a chance on me and little did I know it would set the stage for the next five years of my career and the beginning of that circle.
My job as a plover monitor did not last long, only a few short months, when I had to bid farewell to my life in the field with the birds as a new adventure began for me with the U.S. Fish and Wildlife Service, New Jersey Field Office (USFWS). As luck would have it, the job also focused on plovers. Not so much on the ground, getting down and dirty with plovers, but managing the plovers by helping implement conservation measures to increase their survival and recovery, and minimize or eliminate adverse impacts of numerous beach related projects on the birds. How does one begin to achieve this? Partnering. Continue reading “From Plovers to Partners and Back Again – Coming Full Circle”
Because of the small amount of research undertaken when compared to other more intensely studied bird species, we are still very far from a complete understanding of the American oystercatcher. For several years staff from Conserve Wildlife Foundation of NJ, along with other partners throughout the state have collected data for both breeding and wintering populations of American oystercatcher in New Jersey. Very little data has been collected, however, during the non-breeding/migratory season.
That data gap is now beginning to close. Thanks to a grant provided by the National Fish and Wildlife Foundation, CWF was able to conduct surveys during the post-breeding/migratory season on roosting flocks of American oystercatcher at southern New Jersey Atlantic coastal inlets from Brigantine to Cape May. This data, when combined with data collected by other researchers range-wide, helps us to discern life-span, survival rates, movement patterns, population numbers, age structure and other important characteristics vital to our better understanding of this species.
For this study research staff surveyed inlet flocks of American oystercatchers between late July and early December 2010. Flocks were counted and observed for banded birds. There were just over 400 individual band resights during the survey period, significantly increasing our database of resighted birds. The majority of birds that were resighted were banded in New Jersey, although a number of birds banded in other states were also observed, including from Massachusetts, Delaware, Virginia, Georgia, North Carolina, and South Carolina.
Preliminary analyses of band resights and flock counts suggest seasonal patterns of behavior and show a variety of migration strategies within the species. Some migrants were sighted only once and seem to be passing through relatively quickly en route to roost sites further south. Some individuals resighted here in New Jersey were subsequently resighted a short time later on the Florida Gulf Coast at Cedar Key, indicating impressive migration distances covered in a very short time.
Others banded oystercatchers where resighted during the survey more than once here in New Jersey and spent considerable time roosting at or near our southern coastal inlets before moving on as temperatures dropped towards the end of the survey period. Still others were present during the entire period. New Jersey is the northernmost extent of the wintering range for the Atlantic Coast population of oystercatchers.
During the survey period, Brigantine, Great Egg Harbor, Corson’s, and Townsend’s inlets all showed a gradual increase in oystercatcher numbers to their peak flock counts towards the middle and end of October, when migrants headed for warmer latitudes and winter residents consolidated into New Jersey’s two primary winter flocks at Absecon and Hereford Inlets. These two primary winter roost sites had their flock counts gradually increase to their peak counts shortly before the end of the survey period. Between 350 and 400 birds were seen in each of these flocks at their peak.
As the primary surveyor for CWFNJ, one unexpected discovery I made early in the survey period was the identification of several alternative high-tide roosting sites at vernal marsh ponds close to, but some distance from, the inlets, and away from previously recorded roost site locations. Further research may help clarify if these alternative sites are a normal part of early migratory oystercatcher habitat, or are in response to the documented high levels of human disturbance in their normal roosting locations during the tourist season. Birds were observed regularly feeding at these ponds during the high-tide roost. It is possible that early in migration season the birds are still actively building reserves of energy to take them safely through the winter, and inhabit the vernal ponds to be close to an easily accessed food source. Wintering flocks, in contrast, are less likely to be seen feeding during the high-tide roost, and more likely to assume their energy conservation pose, standing on one leg with bill tucked under a wing, and the other leg drawn up tight beneath the body, with little or no feeding activity observed.
As fall progressed and human disturbance tapered off to some degree, the flocks did move to their more traditional roost sites, which are generally the beaches, sandbar islands and bayside sandflats of our inlets. Frequent shoulder-season human disturbance of the roosting flocks in these areas from watercraft users, beach walkers, anglers, ORVs, and dogs warrants additional systematic quantitative assessment and analysis for possible negative effects on the survival rates of migratory oystercatchers. Such analysis will aid in the evaluation of the need for the implementation of habitat management actions to mitigate any negative effects discovered.
The American oystercatcher precariously inhabits a narrow ribbon of coastal habitat which is also used by many other threatened and endangered plants and animals. It thus has strong potential as a “sentinel species” to help us to gauge both the current health of our ecosystem and the success or failure of habitat management actions undertaken. Continued data collection and analysis will enable us to take science-based steps in our efforts to understand the American oystercatcher, and to preserve and protect the beautiful barrier-island beaches, bays, and adjacent tidal marsh that make up our southern Jersey Shore.
