The breeding season started off well enough for the peregrine family that star on our Falcon Cam in Jersey City this year. Four eggs were laid, three sisters hatched, were banded and were growing up high atop the skyscraper at 101 Hudson Street. Thousands of viewers enjoyed seeing them flapping and jumping, strengthening their flight muscles for their first flight to fledge from the nest.
Story by Alison Levine
Two sets of peregrine falcon chicks were recently banded high atop buildings in Elizabeth, Union County, and Jersey City. Biologists from Conserve Wildlife Foundation (CWF) and the New Jersey Department of Environmental Protection’s Endangered and Nongame Species Program (ENSP) checked the health and measurements of the falcons, while also placing both United States Geological Service bird bands and state auxiliary bands so the birds can be identified in the future.
NJTV and TAPintoUnion captured the banding in Union County, while News 12 New Jersey and CBS-2 covered the Jersey City banding.
(more…)By Ben Wurst, CWF Habitat Restoration Manager
Ospreys have made great progress toward recovery in New Jersey, rebounding from a low of 50 nests in 1974 to 589 active nests in 2018. This progress should be celebrated, and victory can and should be declared, as The Press of Atlantic city suggested in their March 1 editorial “Maybe it’s time NJ declares victory in restoration of ospreys.”
But as a biologist who has studied ospreys for many years I also know that declaring victory doesn’t just mean we should walk away and abandon them.
By Ben Wurst
This is a project that we’ve dreamed about for some time. As you may know, much of our work with ospreys has been centered around Barnegat Bay, where the population has grown from around 60 pairs to over 140 nesting pairs over the past decade. This new camera will help us raise awareness for protecting this important indicator species in the Barnegat Bay watershed, who have direct implications for the health of our coastal environment.
(more…)by Lindsay McNamara, Communications Manager
CWF’s blog on the American kestrel is the fifth in a series of five to be posted this week in celebration of International Migratory Bird Day (IMBD). IMBD 2016 is Saturday, May 14. This #birdyear, we are honoring 100 years of the Migratory Bird Treaty. This landmark treat has protected nearly all migratory bird species in the U.S. and Canada for the last century.
American Kestrel photo by Robert Lin.
In New Jersey, catching a glimpse of an American kestrel is a rare treat! These beautiful, colorful birds of prey are about the size of a mourning dove — they are the smallest falcon in North America. Kestrels are one of two falcon species that nest in New Jersey.
American kestrels are opportunistic hunters, feeding on a number of different animals like grasshoppers, lizards, mice, snakes and small birds. Unlike peregrine falcons, kestrels don’t use speed to kill their prey. They perch to see their target and then use a stationary, hovering flight that allows them to dive down short distances to capture their prey. The eyespots of a kestrel make it appear to be “looking” up at its aerial predators, like Cooper’s hawks, causing the predators to move on to find a less “alert-looking” target. The eyespots give kestrels the opportunity to focus on hunting for prey beneath them.
Kestrels also hide surplus prey in grass clumps, tree roots, bushes, fence posts, tree limbs, and cavities, to save the food for lean times or to hide it from potential thieves!
Kestrels utilize these hunting tactics in open, grassy habitats — especially ones with cavities for nesting and perches for hunting. Kestrels can be seen hovering in grasslands, pastures and parklands or perched along the road on telephone lines.
Kestrels can be found in both North and South America, from Alaska and Canada in the north to Argentina in the south. During winter in North America, they will migrate southward from the northernmost portion of their range. They live year-round within New Jersey.
Although the American kestrel is widespread, meaning they live year round throughout much of the United States, the northeastern kestrel population is declining. Today, the kestrel is listed as a threatened species in New Jersey.
The decline of kestrels in New Jersey is likely due to destruction of grasslands from development. Nesting cavities are also being lost. As humans clean up fields, we remove trees with nest cavities that kestrels use. Kestrels are secondary cavity nesters. They don’t make their own cavity but use existing natural or man-made cavities.
Since kestrels nest in buildings and other man-made structures, nest box programs are an effective way to help grow the number of kestrels in areas where nest sites are limited.
Conserve Wildlife Foundation of New Jersey, in partnership with the Endangered and Nongame Species Program implemented a nest box installation and monitoring program in 2006. Nest boxes have been placed in areas of habitat determined to be suitable for the birds of prey. The boxes are monitored by biologists during the breeding season. Because kestrels reuse nest sites, particularly if they have successfully raised young, we focus on boxes that have been successful at least once since 2006.
The nest box program in New Jersey appears to be successful; we are adding to the population. Since 2006, we have banded over 300 fledglings. You can help too! Next time you see an American kestrel in the Garden State, be sure to submit a Rare Species Sighting form.
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Lindsay McNamara is the Communications Manager for Conserve Wildlife Foundation of New Jersey.
© 2019 Conserve Wildlife Foundation of New Jersey