A ground nest with three young. photo by Ben Wurst
It’s not very common to see ospreys, a large predatory bird, nest on the ground. Despite the rarity of these sightings, it has become more common and acts as a glimpse into the past (and future), before humans dominated the landscape. Today, more and more ospreys are building nests on the ground and snags over water.
Banding osprey nestlings with red auxiliary bands at a nest off LBI. photo by Northside Jim.
If you live along or visit the coast, then it’s no surprise that ospreys continue to thrive in New Jersey. 2018 was yet another banner year for these coastal nesting raptors. Their large stick nests depict our rivers and estuaries while they indicate that we’re doing a good job of protecting our local environment along the coast. Today we’ve published results from last year’s nesting season in the 2018 New Jersey Osprey Project Report.
CWF Osprey Banding Apprentice Northside Jim holds a young osprey, 13/K, after banding.
Mid-summer marks the nestling period of nesting ospreys, a coastal raptor, whose diet consists mainly of fish. As a state that’s heavily influenced by its location along the Atlantic Ocean, they play a critical role in our coastal ecosystem. Ospreys are important bioindicators of the health of our coastal waters, through the lens of their prey, where pollutants are biomagnified through the food chain. As we consume many of the same fish, they show the effects of these pollutants long before humans, so the health of their population has implications for our coastal waters and us! (more…)
ACTION ALERT: Support ecological management of the most valuable public resource for our coastal ecosystem and economy
by Ben Wurst, Habitat Program Manager
Menhaden is a common food source for ospreys during their nesting season in New Jersey. Photo by Northside Jim.
The Atlantic States Marine Fisheries Commission is accepting public comment on the establishment of ecological management of Atlantic menhaden (Brevoortia tyrannus), which is a keystone species. Basically, a keystone species is one that plays a large role in the ecosystem where it lives. If a keystone species is lost then the ecosystem would dramatically change or cease to function, causing widespread effects to other species that benefit. In New Jersey, ospreyshave largely benefited from a healthy menhaden population as we’ve had relatively high reproductive rates (more than double what’s needed to sustain population) over the past decade. From 2006 to 2016, the population has grown by 30% and above the pre-DDT, historic milestone of over 500 nesting pairs. Around 82% of the state population of ospreys nests along the Atlantic Coast and we observe menhaden at a huge number of nests during our mid-summer surveys. If menhaden numbers drop, then we will likely see osprey numbers follow suite, as reproductive rates will decline, as they are in the Chesapeake Bay.