Conserve Wildlife Blog

Posts Tagged ‘bird of prey’

Record Breaking Return of New Jersey Osprey

Monday, April 23rd, 2018
Male osprey makes epic return to nest along Delaware Bay; turns seventeen this summer!

by Ben Wurst, Habitat Program Manager

Photographer Brian Kushner has photographed this bird over the past ten years. Just this past week he confirmed his return to his nest by ID’ing him by his band # 0788-45514. Click to view large on Flickr. photo by Brian Kushner.

The spring arrival of the North American osprey (Pandion haliaetus carolinensis) to their nesting grounds in New Jersey was delayed slightly due to prevalent north winds. As we saw many birds begin to arrive to their nest sites, which they return to year after year, we were particularly interested in the return of one very special osprey. This individual, if he survived the winter would be the oldest living osprey ever recorded in New Jersey to be observed on his nesting grounds. Ospreys face many threats and their life span averages around 8-10 years, but some can reach 20 years old.

We would not know how old this bird is without the USGS bird band that was affixed to his left leg before fledging in the summer of 2001. Photographer Brian Kushner, who has been watching this nest for the past 10 years, was able to photograph the band, which allowed us to track down his origins. He was banded on July 5, 2001 before he could fly. The nest was less than 5 miles away from where he currently nests along the Delaware Bayshore. Typically it is very difficult to ID birds by their USGS bird bands, and most recoveries or sightings of bands occurs during an injury or death, but Brian’s been able to use his photography equipment to positively ID this bird. Banding data shows that males return as adults to nest in very close proximity to their natal areas while females tend to wander further away to nest.

Ospreys are currently laying eggs and starting incubation, which occurs right after the first egg is laid. Nests with eggs and young are protected from disturbance during this time, and established nests cannot be removed without consulting with NJ Fish & Wildlife and USDA Wildlife Services. Please refer to our “Living with Ospreys in New Jersey” guidance document for more information.

Photo from the Field: Saving Osprey Nest #3591

Tuesday, June 21st, 2016
Boaters urged to not approach active osprey nest inside Barnegat Inlet
by Ben Wurst, Habitat Program Manager
 
Osprey Nest #3591

Osprey Nest #3591

Yesterday, while working on Barnegat Bay, we visited this natural nest that is behind the dyke inside Barnegat Lighthouse State Park. This is the third time we’ve passed by to monitor their success. So far, so good and it looks like they now have young in the nest. As you can see the nest is built in a precarious location on a sandbar. When the sandbar is exposed people can walk right up to the nest. Last year the pair did not raise young but people did still walk up to the nest. With young, the adults will be more defensive of their nest to protect their young.

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Species Spotlight

Thursday, January 6th, 2011
American Kestrel (Falco sparverius)

Kestrels are the smallest falcon (about the same size as an American Robin) in North America. Its plumage is striking with rufous coloration its back and tail. 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 Species of Special Concern in New Jersey (not yet endangered or threatened but on its way).

American kestrels are versatile, opportunistic hunters feeding on assorted small prey, such as grasshoppers, lizards, mice, snakes and small birds. © Robert Lin

Kestrels are found in open, grassy habitats – especially ones that have 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. The decline of kestrels in New Jersey is likely due to destruction of grasslands from development. Also, nesting cavities are lost. As we clean up our fields, we remove trees with nest cavities the kestrels use.

Researchers have not determined the exact reason for kestrel declines but, we do know that the availability of cavities for nesting appears to be a limiting factor. 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.