Tag: 2013

Volunteers help to “re-plant” leaning osprey platform

by Ben Wurst, Habitat Program Manager

This past week I was joined by a large group of volunteers to remove and re-plant a leaning osprey tower in Point Pleasant. It all began after Superstorm Sandy barreled through the area a little over a year ago…

This nest, along with many others, were uprooted from where they were originally installed. Many homes in the area were flooded by the storm surge associated with the storm (and many were still rebuilding when we were there). Any and all debris that was created ended up being pushed to the high areas of the marsh and in turn, people’s yards. This platform ended up in a homeowners backyard. Fortunately the platform was not lost and was thankfully re-installed by a bulkheading company who was working on the homeowners house. This was great news for the ospreys! Their nest had been returned to the saltmarsh and was, in turn, used again by them this past summer. They raised one nestling on the platform.

Things a-drift…a strong Nor’easter ended up pushing over the platform, which caused it to lean…significantly. However, the ospreys adapted and added nesting material to make sure their only nestling would not fall out. At the same time we made plans to re-plant the platform in a section of marsh with more soil, so the platform would have a firm foundation and support. A crew of strong and able volunteers met up with me to help fix the problem. They pulled out the platform and then we transported it to the new location. There we dug a new hole (around 2-3′ deep) and they easily dropped the short (around 12′ high) platform into the hole. These volunteers did a great job, and I was happy to see that many of them lived in the local area. It’s great to see locals getting involved in their local environment and I know that they’ll continue to watch over the nest if anything should happen to it in the future. I’m planning on working with the local community association (who owns the land) to install a couple more platforms for ospreys. There’s little suitable nesting habitat for ospreys up on N. Barnegat Bay and in the past we’ve had problems with birds nesting on houses, so this will only help reduce those occurrences.

Barnegat Bay terrapin moves south…

by Ben Wurst, Habitat Program Manager

Northern diamondback terrapins are known to have a very small home range. Some have only been found to occupy the same small creeks, year after year. To help study the size of terrapin populations in New Jersey researchers have used a method called mark and recapture. No one really knows the size of the terrapins population in New Jersey and throughout the range of the Northern subspecies, which ranges from Cape Cod to Cape Hatteras. A portion of the population is captured, marked, and released. The method is repeated and the number of marked individuals is counted and should reflect a proportional number of marked individuals in the entire population.

Since 2001 terrapins have been marked on Great and Barnegat Bays. This past summer we got hits on three females that were PIT tagged (it’s like the Home Again chip for your pet). Their tags were read during road patrols by our intern Ashley. Two of the three were linked back to previous captures. Each is ID’d by the notches on their carapace (upper shell). Each bridge scute on their carapace is assigned a alpha code.

• ACIJV –  First encountered on June 20, 2008 at age 7. Weighed 805 grams with a carapace length of 157cm. She was recaptured again this summer by Ashley on June 9. She is now 12 years old and weighed 934grams. Her carapace was 170cm long. She moved only .86 miles or 4,561 feet from her last encounter, which is typically the small range seen in terrapins.
• The second is ABINOQ – she was orginally trapped on Barnegat Bay (near Gunning River and the Barnegat Docks) on August 23, 2011. She was 8 when trapped and weighed 766 grams with a CL of 170mm. She was re-caught this summer while crossing Great Bay Blvd in Little Egg Harbor. This now makes her 10 years old and she weighed 965 grams and had a CL of 180mm. Now she moved a total of 16.7 miles in two years!!

I find it really hard to believe that ABINOQ traveled 16 miles south in two years. There are a couple ways that she could have moved that far south. Superstorm Sandy – I think that this is a good possibility. Usually in late October most terrapins should have been entering hibernation, but a few could have still been active. I got a couple calls shortly after the storm hit from residents in the Little Egg Harbor area who found displaced terrapins in their yards. Given the fact that upwards of 6 feet of water were forced onto the coastal marshes with the storm surge, this could have pushed ABINOQ south towards Great Bay Blvd, where she was encountered this summer. Human intervention – this is also a very likely scenario. People often pick up terrapins when they find them on or near roads and sometimes take them home. Other times they take them and put them somewhere else, where they think they should belong… This summer I found a large female on an inland road in Upper Twp. (Cape May County). She was over 1.5 miles from any kind of brackish water…which is a long distance for any aquatic turtle to travel on land!

These findings are really interesting and with the data collected we’ll be able to learn a lot more about the local terrapin population. We hope to expand the use of PIT tags readers by fundraising to purchase additional readers. If you’d like to donate to help us purchase one, please shoot me an email.

This weekend (Sept. 14 & 15th) at Colliers Mills WMA in Jackson, NJ

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Update on the Merrill Creek birds.

by: Larissa Smith, Wildlife Biologist/Volunteer Manager

Back in February I gave an update on the Merrill Creek birds that had been fitted with transmitters.  https://conservewildlifenj.org/2013/02/01/tracking-eagles-in-nj/

We continue following the movements of the female that had the transmitter placed on May 29th, 2012. She spent the winter down at the Delmarva Penninsula in coastal Virginia and then headed up north and spent a large portion of the summer in Maine. She is starting to head south and on September 2nd was in Connecticut.

On May 31, 2013 the largest of three chicks at the Merrill Creek Reservoir nest, a female, was fitted with a transmitter.

This transmitter is different than the ones previously used in that it uses GSM technology. Instead of using satellites to pick up the bird’s location, the transmitter will transmit data via cell phone towers. The data is then transmitted over the internet and delivered as an email to a mobile device or computer. This new technology transmits more data, costs less and allows users to have instant access to the data through smart phones or computers. Since fledging this bird has been on the move spending time in NY, PA and back to NJ and as of September 3rd was back near the nest site.

To follow both these eagles movements  go to: http://www.merrillcreek.com/eagletracking.html.

 

 

Wondering how you can learn more about shorebirds? Look no further.

 

Despite its part in one of the world’s most incredible migrations, the annual arrival of tens of thousands of shorebirds in Delaware Bay remains relatively unknown to many New Jersey residents. Only recently have shorebirds received some news coverage, but it’s not good news – their numbers are declining rapidly. Scientists have begun to fear that without concerted conservation efforts, species like the red knot may soon go extinct.

 

The Delaware Bay Shorebird Project, a study led by the New Jersey Division of Fish & Wildlife’s Endangered and Nongame Species Program, has documented shorebird activity in Delaware Bay for nearly thirty years. The result has been an extensive knowledge base that documents every aspect of shorebird life – from measuring food availability and weight gains to tracking migration routes and breeding success – in New Jersey and beyond. Now, as a longtime partner on this project, the Conserve Wildlife Foundation of New Jersey is proud to introduce a new way to learn about these wonderful birds and the work underway to save them: a brand new shorebird site!

 

These new additions are loaded with content to bring you up to date on all the latest developments in the protection of shorebirds. Learn about these special birds on the Key Species page, and find detailed descriptions about their appearance, life cycle, and where to see them on their own pages in our online Field Guide. Check out the Media page for videos, photos, news articles, scientific publications, and more. Take an in-depth look at all the different areas of shorebird study currently underway on the Research page, and click on the Conservation page to discover how these birds are being protected. Finally, visit our Get Involved page to learn how you can become part of the efforts to help save these remarkable species from extinction.

 

Be sure to check out all the new additions at:  http://www.conservewildlifenj.org/protecting/projects/shorebird/

 

Is there more debris on coastal saltmarshes?

by Ben Wurst, Habitat Program Manager

Last year I started collecting trash and marine debris that I found at osprey nests along the Atlantic Coast. I’ve always removed trash from nests, especially trash that can harm an osprey through entanglement. Now it’s collected to use as an educational tool to make people more aware of the amount of trash that winds up in our waterways. Continue reading “Marine debris: Post-Sandy”

by Larissa Smith, Wildlife Biologist/Volunteer Manager

Eagle Project Volunteer Tom McKelvey captured this photo of one of the juveniles that fledged from the Shark River eagle nest in mid-June.  So far this nesting season 157 young eagles have fledged from NJ nests. The juveniles will remain in the nest area for the next few months while they develop their flight and hunting skills.

 

 

Surprise! Two late season peregrine nestlings!

by Ben Wurst, Habitat Program Manager

Earlier this week two 3 week old peregrine falcon nestlings were banded by Kathy Clark, Supervisory Zoologist with NJ Fish & Wildlife. We checked this nest for hatching after earlier visits revealed that the pair had only began laying eggs when all other nests had young that were 3-4 weeks old in June. We’re really not sure when they were so late this year.  Kathy had to wait for temperatures to fall before banding the young, since extreme temperatures only stress out adults in addition to the stress of us humans checking on their nests.

Early results are good; public needed to help determine size of population

by Ben Wurst, Habitat Program Manager

I just wrapped up the most intense field season in my entire career. In cooperation with NJ Fish & Wildlife’s Endangered and Nongame Species Program I help to monitor and manage the state population of ospreys. For the first time in four years we are conducting a statewide census for nesting ospreys. Almost all areas that I’ve surveyed, from Monmouth Beach to Atlantic City (and Wildwood) have done quite well, and the effects of Sandy on nesting ospreys appears to be minor.

Barnegat Bay is an area where I’ve concentrated much of my work. Over the past 5 years the number of available nesting platforms has tripled, from only a handful to over 50. Almost every platform was active this year. Amazing enough, this year on Barnegat Bay, a total of four nests produced four young each (one can be viewed on a live streaming camera at Island Beach State Park)!! This is quite a rare occurrence and is something I’ve never seen, especially for all of them to be on the same watershed is simply amazing!! Full results from all the surveys will be released in early fall. All of the data collected from surveys will be used in the census and we are looking for the public to help fill in valuable gaps in data.

Ospreys are indicators of a healthy marine environment. Ospreys are top tier predators who feed exclusively on fish. Many contaminants runoff into our coastal waters and over time become biomagnified through the food chain. Ospreys are extremely sensitive to many contaminants, including organochlorine pesticides (DDT), polychlorinated biphenyls (PCBs), and heavy metals. Since ospreys eat the same fish that we do, then their health also has implications for people. So, the bottom line is that it is important to monitor the nesting activity of ospreys in New Jersey!

We need your help:

For the first time in the project’s history we’re attempting a statewide census of nesting ospreys without the use of aerial surveys! This was a common (and very effective) way of surveying large areas in a short amount of time with only very minimal staff effort. Some things have changed since the 1970s and 80s….the survival of ospreys are not in jeopardy and helicopter surveys are much more expensive now! Over the past 6+ years, with help from many dedicated volunteers, we have surveyed around 70% of the known population in New Jersey. This year, CWF and NJ Fish & Wildlife’s Endangered and Nongame Species Program decided to release the locations of almost 1,000 known nest sites for ospreys to the Center for Conservation Biology’s Osprey Watch, a global osprey watching community website.

On Osprey Watch anyone can see nest sites and then report nesting activity at those nests. Users can join our monitoring group “New Jersey Osprey Project” and report on any nests they watch or where we are lacking data. You can also map new nests, add photos, and even indicate the type of nesting structure. It’s a pretty awesome website for anyone who is into ospreys!! 🙂

• View maps of areas where observations are needed

 

CWF’s Larry Niles is in Northern Canada searching for Red Knots and other shorebirds in their Arctic breeding territory. We are following him and posting summaries of his blog entries as he reports from the field.

 

Our second-to-last day in the Arctic was rained out. A constant cold drizzle punctuated by brief downpours confined us to our tents, as the limited visibility would have made it impossible to spot Red Knots or their nests – or approaching polar bears.

 

But on our last day on Knot Plateau, we woke to a brilliant sunny day. While Rick, Steve, and Mandy broke camp, Josh, Mark, and I drove our ATVs out to the two knot nests we had found two days prior. As we had only banded one parent at each nest, we were hoping to find the unbanded birds this time. But the newly hatched knots and their parents had already left for the nearest wetland, and the incubating bird on the second nest was the bird already tagged with a geolocator. With nothing more to be done, we made our way back to camp to help finish packing.

 

It took two days to return to Coral Harbour and civilization. After staying the night with Josh and his family, we will begin our two-day journey by commercial flight back to Newark, anticipating the shift from 45 degrees to 95 degrees, but glad to be coming home.

 

The expedition was a success simply because we are all coming home safe and sound. But it was also a complete success because we achieved all of our primary goals. First, we established the presence of a new Red Knot breeding area from the ground. Second, we found a significant number of knots compared to our previous study sites on both Southampton and King William Islands, where most of the knot population had disappeared after the rapid decline in stopovers like Delaware Bay. Third, we finished the fieldwork needed to complete our range-wide mapping of rufa knot breeding habitat, which will help future investigations into Red Knot ecology. And finally, we attached the first geolocators to knots in the Canadian Arctic and set a firm foundation for a more successful effort in the future.

 

We are grateful to many people. The expedition would have been impossible without the support of Paul Smith of the Canadian Wildlife Service. The Conserve Wildlife Foundation of NJ, the Canadian Wildlife Service, Rutgers University, the Royal Ontario Museum, and The Steve Gates and Julie Fox Foundation all supported the expedition. The Coral Harbour Hunters and Trappers Organization provided essential support. Bruce McKitrick helped us with supplies. Finally we thank Joshua, Suzy, and their family for their hospitality. This expedition was only successful because of all of you.

 

For the full blog entries, see Larry’s posts: Arctic Rain, Our Last Day, and Summing Up Our 2013 Arctic Expedition.