Kathy Clark, ENSP Wildlife Biologist and myself made use of our trip to North Jersey on Tuesday. Both being based out of S. Jersey, we try to maximize our productivity and time spent up north. We visited a total of three peregrine falcon nest sites to conduct winter maintenance at them. Winter maint. is in preparation for the start of their nesting season, which usually begins in mid-late March. Eggs are usually laid in late March-early April. On the list for usual maint. (which we do at over 12 nest sites throughout NJ) is to refresh gravel, treat for parasites, and check condition of predator guards (for those sites on former hacking towers). At the sites we visited yesterday, we had some additional work.
Our first stop was at the Union County Courthouse in Elizabeth. While fixing up the nestbox on the roof, we also helped with the installation of a new pinhole camera that was installed on the inside wall. The camera, paid for and installed by Union County, will stream online soon. CWF will help to promote the camera and our own Peregrine Falcon Cam curriculum. The female that nests here was not seen as we would have known since she is overtly aggressive to anyone who climbs onto the roof there. It could be the same female but it was odd that she was not seen at all. In addition, Kathy photographed the male who is banded (likely in NY – you can tell by the silver band he wears – we use black in NJ). The previous male was not banded. So, there could be a whole new pair here. Only time will tell if this site will be active this year. Having the camera there will help biologists learn about the turnover and if eggs are in turn laid by the female.
Second, we visited the Jersey City eyrie. There we removed the pinhole camera to get repaired/replaced. Then we painted the inside of the nestbox, which was showing its age and a good covering of guano. The female Juliette was there and not quite sure of our presence. Since she has not nested here yet, she does not attribute our presence with any kind of disturbance. This will change when she has young to protect.
Our last visit was to the PSE&G Sewaren Generating Station. Here we moved a new nestbox from one building to another. The story of this site is where young falcons were found on the ground after attempting to fledge a few years ago. Their nest site was found to be in an old and unused duct which was accessed by an open window on the north side of the building. Then last year the pair attempted to nest on a tiny ledge on the south side of the building, but the nest was flooded. Our site visit revealed that there was a suitable ledge above the tiny ledge and we moved the nestbox here. This will give them the best chance of successfully raising young. PSE&G staff were very willing to help and are proud that their generating is home to a pair of nesting falcons!
Cameras/photography can be used to document new birds at nest sites. This is a new male peregrine falcon (yet to be ID’d) at the Union County Courthouse. The previous male was not banded. Photo by Kathy Clark/ENSPKathy and I atop the Union County Courthouse. Photo by Betty Ann Kelly.Prey remains atop the Union County Courthouse. Can you ID it? Photo by Ben WurstJuliette on a perch atop 101 Hudson St. Photo by Ben WurstThe inside of the Jersey City nestbox got a new paint job.Our last stop of the day was at the PSE&G Sewaren Generating Station where we moved a nestbox to a new location at the plant. It was placed directly above a narrow ledge that the birds nested on last year. Photo by Ben Wurst
In 1993-94 six young peregrine falcons were released at 20 West State Street (Mary G. Roebling Building) in Trenton to help bolster the population of urban nesting falcons in the area. Currently the closest nest is 20 miles away at the Tacony-Palmyra Bridge (where they also have a camera at the nest). Twenty years later and we may finally get some nesting falcons in Trenton! It all started when Jean Bickal, a worker in the building, noticed a falcon that often perched on the building ledges. From there Kathy Clark, a Zoologist with New Jersey Division of Fish & Wildlife made a site visit and took measurements to see if we could fit a nestbox (dog igloo) out a window on the 10th floor, which also had a roof on it. It appeared one would fit so we setup a date to install the new nestbox.
Cities and urban areas actually provide suitable habitat for falcons. Urban areas usually have lots of ledges under bridges or on buildings for them to nest, and abundant prey, in the form of pigeons and other songbirds. In New Jersey we have three other pairs that nest on buildings in Jersey City, Elizabeth, and Atlantic City, plus pairs that nest on the Tacony-Palmyra, Walt Whitman, Betsy Ross, and Burlington-Bristol Bridges.
On February 5th we helped install a new nestbox on top of a roof at 20 W. State St. We’re hoping that the falcon seen that day will find a mate and use the nestbox to raise young. Fingers crossed that we get some good news soon!
