Conserve Wildlife Blog

Posts Tagged ‘NJ Osprey Project’

Video from the field

Monday, December 5th, 2011
Ospreys, setting more records with a little help from mankind

by Ben Wurst, Habitat Program Manager

At left, Marty McHugh (former chief of NJ Fish & Wildlife) and Pete McLain (former Deputy Director of NJ Fish & Wildlife) in August 2005 at the Sedge House. Ospreys would not be as numerous today if it weren't for their hard work and determination. © Kathy Clark/ENSP

Last year we installed or relocated a total of 17 osprey nesting platforms. This year we installed or moved another 21. In 2011 there were 25 new pairs, some of which, that nested on these new platforms. This year was another record setting year for ospreys in New Jersey. We recorded an average of 2.07 young per active nest, a new record. We last documented the size of population at 486 nesting pairs in 2009 when we conducted a statewide census.  We now believe that the state population has met recovery goals (of more than 500 nesting pairs) that were set after DDT and habitat loss decimated the population by upwards of 90%. We aren’t the only organization who has helped with the recovery of ospreys. We credit the hard work of biologists with the Endangered and Nongame Species Program in the 1970-present who worked tirelessly to help the population rebound. To name a few, former Deputy Chief of ENSP, Pete McLain; former Director of NJFW, Marty McHugh; former Chief of ENSP Larry Niles, current Chief of ENSP, Dave Jenkins; current Director of NJFW, Dave Chanda; and Supervising Zoologist Kathy Clark who has worked to protect ospreys over her entire 20+ year career with ENSP.

We can also credit the recovery efforts to local environmental and water-quality improvements, like the Barnegat Bay Initiative and restoration of the Meadowlands, and by the grass-roots efforts by concerned citizens and groups who have helped provide nesting platforms to accommodate their population growth.

In the next week ENSP and CWF will be releasing the 2011 Osprey Project Newsletter which summarizes the entire nesting season survey results. In the meantime, check out the video below of myself and two friends who volunteered to help me move a nesting platform on southern Barnegat Bay in late 2010. note: I usually have more than 3 people who assist me when installing an osprey platform. As they say “the more, the merrier…”

 

Photo and Report from the Field

Thursday, August 11th, 2011
A little human help goes a long way!

written by Maureen Barrett, CWF volunteer/donor/wildlife enthusiast/educator

With wind speeds clocked at 91-92 mph, the osprey nest behind my house didn’t stand a chance! On Tuesday, July 19th around 8:00 P.M., a thunderstorm came barreling into Fortescue from the northeast. It was a wicked storm with thunder, lightning, and even hail. The wind was so strong that my purple martin housing was being blown around like it was a stalk of phragmites. The adult osprey held their positions on the perching supports of the platform for as long as they could, but soon jumped ship. By that time, the pole for the martin house broke and I couldn’t even see the osprey platform through the rain.

After the storm, some moonlight allowed me to see the silhouette of the osprey platform. It was still standing. But I couldn’t see any nesting material inside; it looked empty. I made an attempt to walk through the marsh to get a closer look, but I thought it would be wise to wait until first light. So I waited for the sun to rise.

An image that was taken using a technique called "digiscoping" reveals two osprey young in the nest.

By 5:00 A.M., my suspicions were confirmed. There was not one piece of nesting material on the platform. Fortunately the adults survived the storm and were once again perched on the platform supports, but the nest and chick were gone. The high winds blew everything off the platform. I quickly put my boots on and walked out on the marsh. I was surprised how relatively easy it was to get to the platform after getting a few inches of rain the night before. There was only one very small ditch I had to cross. I soon found the pile of nesting material and on the edge of the pile was a clump of wet feathers. It looked like the storm had taken the chick’s life. But then I saw some movement! It had survived the storm, the fall, and an evening on the ground!

This being my first experience with such an ordeal, I called my friend Bill Miller who lives up the street. (You know who your friends are when you call them before 6:00 A.M. for a favor!) He brought down a ladder and a piece of plywood. We went back on the marsh, dried the chick with a towel, and put it back on the platform. Within a few minutes, the adults returned to the platform to see their chick back in the nest.

Two other nests in Fortescue were also destroyed by the storm. Later that day, Brian Johnson of the Natural Land Trust’s Glades Wildlife Refuge had to place a foster chick in my nest. This chick’s nest was in a tree and totally destroyed. Both chicks are getting along just fine and being fed by the adults.

Photo from the Field

Monday, October 25th, 2010
Installing Osprey Platforms

By Ben Wurst, Habitat Program Manager

This past week I installed two osprey nesting platforms with the help of some dedicated volunteers. The platforms were installed on two islands known as Little Sedge Islands off Lavallette in Barnegat Bay. I originally planned on only installing one platform there for a woman who donated to help support our osprey project. However, this past spring on the day we were planning to install the platform my wife went into labor with our first child. So I made up for not having the platform installed before this year’s nesting season by installing two this past week.

The islands are preserved as open space and are great habitat for ospreys. They prefer to nest over or near water (their source of food). Islands provide additional protection from ground predators, like raccoons. There are several nesting platforms nearby that are always occupied, so it’s likely that these platforms will be occupied within the next couple years.

Thank you to everyone who helped out!!

Volunteers finish installing an osprey nesting platform on an island on Barnegat Bay. © Ben Wurst


More photos from the installation:

A healthy population

Monday, August 30th, 2010
Osprey numbers continue to rise

by Ben Wurst, Habitat Program Manager

Three osprey nestlings at a nest near Osbourne Island. © Eric Sambol

Ospreys are currently listed as a threatened species in New Jersey. They were first listed as endangered in 1974 after the state population declined to only 50 pairs, from over 500 prior to 1950. Ospreys have made a remarkable recovery in New Jersey thanks to biologists with the Endangered and Nongame Species Program (ENSP) and many volunteers. Surveys that help monitor the population were conducted in late June and early July.

Volunteers and biologists surveyed all major nesting colonies from Sandy Hook south along the Atlantic Coast to Cape May and west to Salem County. Ospreys almost exclusively nest on man-made structures including platforms designed specifically for them, cell towers, duck blinds, channel markers, and boat lifts. Surveyors visited these nest structures to observe whether or not they were occupied. If they’re occupied, then the number of young were recorded and the young were banded for future tracking with a USGS bird band. Preliminary results show that productivity rates are up for all nesting colonies except one (Sedge Island WMA). Since ospreys are predators, they are at the top of the food chain. They are considered to be an indicator species, or a species that is sensitive to changes in environmental conditions and can serve as an indicator of an unhealthy marine ecosystem. Basically, a healthy osprey population means a healthy marine ecosystem.

The climate during this summer has been the complete opposite as last year. It was hot, dry, and calm, with only a few severe storms with high winds that caused some nests to fail. Otherwise, fish stocks are plentiful, especially menhaden. This year many out-of-state commercial fishing boats have started fishing for bunker off New Jersey waters. This is mostly due to declines in herring stocks in New England and the high demand for bait for use in lobster pots. State legislators have introduced a bill that would limit boats from catching bunker for use as bait. Read more here and this press release from the Recreational Fishing Alliance.

Full results from this years survey will be published soon in our annual newsletter. Here is last year’s newsletter.