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Wood Duck - Nest Dump
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Wood Duck - Nest Dump

Wood Duck
(Aix sponsa)

Dump-Nests


While the normal brood size for wood ducks is 10 to 15, nests have been found to contain 30 eggs or more. These extra eggs are the result of "egg dumping" or intraspecific brood parasitism. Egg dumping occurs as a result of several factors, including nest predation and lack of available nest sites. Dumping occurs when a female wood duck, frequently a first-year breeder, follows another hen to hidden or scarce nest sites during the egg-laying period. The visiting bird is stimulated to lay eggs in the nest of the other hen. In the wild, this impulse is kept in check because wood ducks normally nest in isolated locations. Artificial nesting structures are often mistakenly erected close together and in highly visible locations, such as the center of a pond. This creates a situation where egg dumping is common, and overall reproductive success plummets. A hen whose nest is dumped with too many eggs may abandon it; the result is a huge amount of wasted reproductive effort. In a natural scenario, approximately 80 percent of eggs hatch. But where egg dumping is out of control, hatch rates may drop to as low as 10 percent. Because of this, it is critical to locate nest boxes in isolated locations as described above. If wood ducks are very rare in the area, it may be necessary to place boxes in open areas initially to encourage use, and then moving them to more secretive locations as the population increases.
   
Heartwood Wood Duck Joy Box Birdhouse
John James Audubon did some of his most famous bird drawings as he explored on foot along the Natchez Trace, which happens to be located near Star, Mississippi, where we design and make all our Heartwood homes. While birding has come a long way since Audubon's time, today with our four-season nesting boxes and basic homes, you don't need to go to anywhere to enjoy all manner of wonderful bird life flocking to your door. Discreet complements to any landscape, these hardy havens are convenient, long lasting and beautiful-the picture perfect start to your life in birding! Season after season, this delightful nesting box is a joy to behold and a breeze to maintain thanks to easy twist latch and slide-front panel that also inverts for winter roosting. So easy to use, so easy to love, it turns birding into child's play! Rugged construction features 13/16" solid cypress and headed ring shank stainless steel nails.
Dimensions: 11" x 12" x 24 1/2"; 4" hole
Made in the USA!

   
Coveside Bufflehead Duck House
The Bufflehead, with its striking white sides and white patch on its head, is smaller than most cavity nesting ducks.Dependent on nest boxes, this house is ideal due to the scarcity of holes excavated by a large woodpecker or flicker.
RANGE: Breeds in Alaska east to western Quebec, and south in mountains to Washington and Montana. Winters in southern U.S., south to Mexico, Gulf Coast and northern Florida.
HABITAT: Nests on wooded lakes and ponds; winters mainly on salt bays and estuaries.

(17-3/4"h x 9-1/4"w x 11"d)

   
Coveside Common Merganser Duck House
This house provides a perfect nest box for mergansers that normally nest in tree cavities. Positioning a house on a pole in the open water provides extra protection from predators.
RANGE: Breeds across Canada from eastern Alaska, Manitoba and Newfoundland south in mountains to California, northern New Mexico, Great Lakes and northern New England. Winters south to northern Mexico and Georgia; also in Eurasia.
HABITAT: Breeds on wooded rivers and ponds; winters mainly on lakes and rivers, occasionally on salt water.

(24-1/4"h x 11"w x 13"d)


   
Coveside Small Wood Duck House
"Dump nesting" occurs when a number of females lay eggs in a single house, which sometimes results in clutches with over 70 eggs. Mississippi State University did a study of Wood Ducks in an effort to reduce this problem. A smaller nest box was designed and "dump nesting" was reduced. Although fewer ducklings are fledged from each box, the survival rate is improved and the cost per fledgling is less. This box comes with a wire ladder and nesting chips, and the front opens for observation and cleaning.
RANGE: Breeds from British Columbia south to California, and from Montana east to Nova Scotia, and south to Texas and Florida; absent from Rocky Mountains and Great Plains. Winters near Pacific Coast north to Washington, and to New Jersey in East, rarely further north.
HABITAT: Nests beside wooded rivers and ponds. Visits freshwater marshes in late summer and fall.

(17"h x 7-1/2"w x 15"d)

Coveside Wood Hooded Merganser Duck House
Coveside's Wood Duck House opens two ways for observation and cleaning, and has an internal ladder for the duckings to climb out. Mother calls ducklings to the protection of the open water at age one day.
RANGE: Breeds from British Columbia south to California, and from Montana east to Nova Scotia, and south to Texas and Florida; absent from Rocky Mountains and Great Plains. Winters near Pacific Coast north to Washington, and to New Jersey in East, rarely further north.
HABITAT: Nests beside wooded rivers and ponds. Visits freshwater marshes in late summer and fall.

(24-1/4"h x 11"w x 15"d)


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