Conserve Wildlife Blog

Posts Tagged ‘Conserve Wildlife Foundation of New Jersey’

CWF Assists the State with Wintering American Oystercatcher Survey

Saturday, January 8th, 2022

By Todd Pover, Senior Wildlife Biologist

American oystercatcher winter flock.

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.

Annual winter surveys have been conducted in New Jersey in recent years – at high tide they form large roost flocks in inlets, so they are more easily counted. Surveys are done on the ground over a 10-day period in December and this year a half-day aerial count via helicopter was also utilized to better inform the survey. This winter’s survey was organized and directed by the state’s Endangered and Nongame Species Program with assistance from partners, including CWF, and volunteers. CWF Biologists Meghan Kolk and Meaghan Lyon conducted several ground surveys and Todd Pover was one of three surveyors who flew the aerial survey.

As many as 1,000 individual oystercatchers can be present in the late fall/early winter along the Jersey Shore, primarily in the southern region, although counts were on the lower side this year with only 500-600 being tallied. The lower count was almost entirely the result of a very small flock within Hereford Inlet, which typically has one of the highest winter concentrations. Oystercatchers will shift further south along the Atlantic Coast during the winter when persistent extreme cold weather arrives in New Jersey, as it limits food availability. However, the weather was relatively mild leading up to the survey, so it isn’t clear why the numbers were lower this year.

A zoomed in view of wintering American oystercatcher flock through a spotting scope.

A Year of Surprises – New Jersey’s 2021 Beach Nesting Bird Season

Monday, January 3rd, 2022

By Todd Pover, Senior Wildlife Biologist

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.

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Found! Duke’s Tracker Reboots

Wednesday, December 29th, 2021

by Barbara McKee, NJ Eagle Project Volunteer

“Duke” December 19th, 2021 by Barb McKee

A year ago November I began tracking Duke. I was fortunate to see and photograph him more than a dozen times and wrote two blogs for CWF about these adventures. 

See “Duke’s Homecoming” and “Playing Hide and Seek with an Eagle”.

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Coastal Barn Owl Project Update

Tuesday, November 9th, 2021

By Meghan Kolk, CWF Wildlife Biologist

The Coastal Barn Owl Project team is gearing up for another round of nest box installations in coastal southern New Jersey.  After a successful fundraising appeal, we can now thank our donors by adding more potential nesting opportunities for barn owls, a species in population decline. 

Our fourth and most recent box was just installed on October 22 in the saltmarshes of Cape May County.  With each install, the team is becoming more efficient, and we hope to get several more boxes up in key locations before early spring when the owls begin their search for suitable nesting sites. 

The newest barn owl nest box with volunteers Kevin Knutsen, Steve Eisenhauer and Mike Lanzone on left.  Team leaders Tricia Miller and Meghan Kolk on right.  Photo by Lisa Ferguson.

Uncovering Urban Reptile and Amphibian Diversity

Monday, November 8th, 2021

by Christine Healy, Wildlife Biologist

Coverboards are typically placed along ecotones, where species diversity is expected to be greatest. The corrugated tin board, pictured above, was positioned along a forest edge where larger deciduous trees meet a more open, sandy landscape.

How do you survey for animals that spend most of their time hidden under leaf litter or wedged between fallen tree limbs and rocks?

In the case of reptiles and amphibians, the answer is to use coverboards!

Coverboards are materials that are intentionally placed within a potential habitat, often along ecotones (where different habitat types- e.g., wetland and forest, field and forest, etc. come together) that trap moisture and retain heat, creating favorable conditions for our “cold-blooded” (ectothermic) friends. Researchers often arrange coverboards in long transects or arrays and collect data on the diversity of the community underneath the boards as compared to the surrounding environment. This technique was used by NJDEP Division of Fish and Wildlife to survey for herptiles in 17 wildlife management areas in the early 2000s (Golden, 2004). A total of 30 species were recorded during the first year of the study, including long-tailed salamanders, pine barrens tree frogs, and northern pine snakes, all of which are listed as threatened in New Jersey.   

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