Open Water = Winter Birds

Open Water = Winter Birds (HM1FDW)

Location: Oswego, NY 13126 Oswego County
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Country: United States of America
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N 43° 27.729', W 76° 31.195'

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Inscription

Ducks, Gulls, and Predators

— Natural History —

Food and Shelter

The mouth of the river and harbor provide waterfowl and waterbirds an environment sheltered from the winter gales of Lake Ontario. The breakwalls serve as resting places for the gulls where any approaching predator may be quickly detected, while at the river's mouth, shielded from the storm waves, diving ducks harvest food.



The large flocks present provide enhanced opportunities for social interactions among individuals to aid them in finding mates for the summer. For these birds it is a winter vacation spot, a safe place to prepare for the next breeding season.



Courtship

By mid-January courtship begins in many ducks. Warm sunny days trigger courtship rituals among male ducks. Several male Common Goldeneye may display for a single female, each one trying to impress her more than his rivals. With heads pumping back and forth.



Opportunity

The large flocks of gulls and waterfowl found here attract predators, including Bald Eagle and Snowy Owl. An adult Bald Eagle will flush a flock of ducks, then hover over any sick or injured bird. The weak bird will dive repeatedly until exhausted, when it is plucked from the water by the waiting eagle. The predators provide a service to the prey species by removing sick birds and limiting the spread of disease, while these magnificent birds of prey are sustained through the winter to migrate and breed again.



Gulls

There are four species of common gulls here; Great Black-backed, Herring, Ring-billed and Bonaparte's. As the Bonaparte's depart in early winter, rare Arctic gulls including Glaucous and Iceland Gull arrive. These birds have pure white immature plumages and adults lack black wing tips. Gulls often steal food from diving ducks. Large species, such as Glaucous and Great Black-backed, may take small waterfowl and gulls.



Ducks

Diving ducks such as Common Goldeneye, Bufflehead, greater Scaup and Long-tailed Duck predominate amongst wintering waterfowl flocks. Dabblers including Mallard, American Black Duck and Gadwall occur, but the fast running river water and the deep harbor are better diving duck habitat. Ducks that can dive to depths of 20 or more meters find that food is readily available.
Details
HM NumberHM1FDW
Tags
Placed ByGreat Lakes Seaway Trail
Marker ConditionNo reports yet
Date Added Wednesday, October 15th, 2014 at 4:32am PDT -07:00
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Locationbig map
UTM (WGS84 Datum)18T E 377045 N 4813259
Decimal Degrees43.46215000, -76.51991667
Degrees and Decimal MinutesN 43° 27.729', W 76° 31.195'
Degrees, Minutes and Seconds43° 27' 43.74" N, 76° 31' 11.7" W
Driving DirectionsGoogle Maps
Area Code(s)315
Which side of the road?Marker is on the right when traveling West
Closest Postal AddressAt or near 51 Lake St, Oswego NY 13126, US
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