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− | [[Image:Hooded_Merganser.jpg|thumb|550px|right|Photo © by {{user|Pete+Arnold|Pete Arnold}} <br /> Salt Lake City, [[Utah]]]] | + | [[Image:Hooded_Merganser.jpg|thumb|550px|right|Male<br />Photo © by {{user|Pete+Arnold|Pete Arnold}} <br /> Salt Lake City, [[Utah]], [[USA]], 17 January 2004]] |
;[[:Category:Lophodytes|Lophodytes]] cucullatus | ;[[:Category:Lophodytes|Lophodytes]] cucullatus | ||
==Identification== | ==Identification== | ||
− | 42–50 cm (16½-19¾ in); a small, long-bodied diving duck where both sexes have a | + | 42–50 cm (16½-19¾ in); a small, long-bodied diving duck where both sexes have a hammerhead-like crest. |
'''Male''' in breeding plumage is mostly black and white with only flanks orange-brown.<br /> | '''Male''' in breeding plumage is mostly black and white with only flanks orange-brown.<br /> | ||
− | '''Female''' and non-breeding male are brownish grey overall. | + | '''Female''' and '''non-breeding male''' are brownish grey overall. |
− | [[Image:2012-02-05HoodedMerganser1767.jpg|thumb|350px|right|Female<br />Photo © by {{user|Deanneart|Deanneart}}<br />Southern [[New Hampshire]], [[ | + | [[Image:2012-02-05HoodedMerganser1767.jpg|thumb|350px|right|Female<br />Photo © by {{user|Deanneart|Deanneart}}<br />Southern [[New Hampshire]], [[USA]], 5 February 2012]] |
Like other mergansers, this bird has a long narrow bill which is mostly black in breeding male and brown with orange base in female. <br /> | Like other mergansers, this bird has a long narrow bill which is mostly black in breeding male and brown with orange base in female. <br /> | ||
Iris: starts as yellowish brown in juvenile becoming yellow in male during second year, but becomes more reddish-brown in the female. | Iris: starts as yellowish brown in juvenile becoming yellow in male during second year, but becomes more reddish-brown in the female. | ||
==Distribution== | ==Distribution== | ||
− | [[Image:DSC 6345.JPG|thumb|350px|right|Juvenile<br />Photo © by {{user|Gerald+Friesen|Gerald Friesen}}<br />Carlsbad, [[California]], [[USA]], November 2016]] | + | [[Image:DSC 6345.JPG|thumb|350px|right|Juvenile<br />Photo © by {{user|Gerald+Friesen|Gerald Friesen}}<br />Carlsbad, [[California]], [[USA]], 21 November 2016]] |
− | This duck is a permanent or summer resident in the Northern portions of the [[United States]] and [[Canada]]. During the winter these ducks migrate across the Southeastern United States. In the Central | + | This duck is a permanent or summer resident in the Northern portions of the [[United States]] and [[Canada]]. During the winter these ducks migrate across the Southeastern United States. In the Central United States this bird is found as a migrant with birds wintering on the West coast. |
− | Most [[Europe|European]] sightings are likely to be | + | Most [[Europe|European]] sightings are likely to be escapees from wildfowl collections, though some (particularly in [[Iceland]] and [[Britain]] could be genuine vagrants. |
==Taxonomy== | ==Taxonomy== | ||
− | [[File: | + | [[File:Hooded Merganser (male in flight) by Jim Crosswell (replacement).jpg|thumb|350px|right|Male<br />Photo © by {{user|Jim+Crosswell|Jim Crosswell}}<br />Windsor, [[Ontario]], [[USA]], February 2022]] |
This is a [[Dictionary_M-O#M|monotypic]] species<sup>[[#References|[1]]]</sup>. | This is a [[Dictionary_M-O#M|monotypic]] species<sup>[[#References|[1]]]</sup>. | ||
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==Habitat== | ==Habitat== | ||
− | These ducks are uncommon in small flocks on sheltered ponds and bays, especially wooded ponds and swamps with standing dead trees. During the breeding season females build a nest in a dead snag much like | + | These ducks are uncommon in small flocks on sheltered ponds and bays, especially wooded ponds and swamps with standing dead trees. During the breeding season females build a nest in a dead snag much like [[Wood Duck]] (''Aix sponsa'') whom they have been known to share nests with. |
==Behaviour== | ==Behaviour== | ||
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These ducks forage by diving in shallow water where they consume small fish, aquatic insects, and crustaceans (especially crayfish). | These ducks forage by diving in shallow water where they consume small fish, aquatic insects, and crustaceans (especially crayfish). | ||
====Breeding==== | ====Breeding==== | ||
− | Females lay a clutch of 5- | + | Females lay a clutch of 5-13 white eggs inside a tree cavity or nest box, this nest is lined with the downy feathers from the hen's chest. The chicks hatch with open eyes and are covered in down. Within one day of hatching the chicks leave the nest never to return. |
− | Female Hooded Mergansers are known to dump their eggs in another Merganser's nest resulting in large clutch sizes; they have even been reported to dump their eggs in the nest of a [[Wood Duck]]. | + | Female Hooded Mergansers are known to dump their eggs in another Merganser's nest resulting in large clutch sizes (up to 44 eggs); they have even been reported to dump their eggs in the nest of a [[Wood Duck]]. |
==Gallery== | ==Gallery== | ||
Click on photo for larger image | Click on photo for larger image | ||
<gallery> | <gallery> | ||
− | Image:607-02965fg Female Hooded Merganser.jpg|Non-breeding | + | Image:607-02965fg Female Hooded Merganser.jpg|Non-breeding male (notice eye color)<br />Photo © by {{user|bobsofpa|bobsofpa}}<br />[[Viera Wetlands]], [[Florida]], [[USA]], 23 February 2007 |
− | Image:HoodedMergansers23Nov07.jpg|Photo © by {{user|CurtMorgan|CurtMorgan}}<br />[[Parker River National Wildlife Refuge]], Newburyport, [[Massachusetts]], [[USA]], November 2007 | + | Image:HoodedMergansers23Nov07.jpg|Photo © by {{user|CurtMorgan|CurtMorgan}}<br />[[Parker River National Wildlife Refuge]], Newburyport, [[Massachusetts]], [[USA]], 23 November 2007 |
</gallery> | </gallery> | ||
==Reference== | ==Reference== | ||
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==External Links== | ==External Links== | ||
{{GSearch|"Lophodytes cucullatus" {{!}} "Hooded Merganser"}} | {{GSearch|"Lophodytes cucullatus" {{!}} "Hooded Merganser"}} | ||
− | {{GS-checked}} | + | {{GS-checked}} |
<br /> | <br /> | ||
<br /> | <br /> | ||
[[Category:Birds]][[Category:Lophodytes]] | [[Category:Birds]][[Category:Lophodytes]] |
Revision as of 21:42, 29 January 2023
- Lophodytes cucullatus
Identification
42–50 cm (16½-19¾ in); a small, long-bodied diving duck where both sexes have a hammerhead-like crest.
Male in breeding plumage is mostly black and white with only flanks orange-brown.
Female and non-breeding male are brownish grey overall.
Like other mergansers, this bird has a long narrow bill which is mostly black in breeding male and brown with orange base in female.
Iris: starts as yellowish brown in juvenile becoming yellow in male during second year, but becomes more reddish-brown in the female.
Distribution
This duck is a permanent or summer resident in the Northern portions of the United States and Canada. During the winter these ducks migrate across the Southeastern United States. In the Central United States this bird is found as a migrant with birds wintering on the West coast.
Most European sightings are likely to be escapees from wildfowl collections, though some (particularly in Iceland and Britain could be genuine vagrants.
Taxonomy
This is a monotypic species[1].
A recent paper proposes that this species should be included in the genus Mergus[3]
Habitat
These ducks are uncommon in small flocks on sheltered ponds and bays, especially wooded ponds and swamps with standing dead trees. During the breeding season females build a nest in a dead snag much like Wood Duck (Aix sponsa) whom they have been known to share nests with.
Behaviour
The tail of this duck is rather long and often held upright when swimming.
Diet
These ducks forage by diving in shallow water where they consume small fish, aquatic insects, and crustaceans (especially crayfish).
Breeding
Females lay a clutch of 5-13 white eggs inside a tree cavity or nest box, this nest is lined with the downy feathers from the hen's chest. The chicks hatch with open eyes and are covered in down. Within one day of hatching the chicks leave the nest never to return.
Female Hooded Mergansers are known to dump their eggs in another Merganser's nest resulting in large clutch sizes (up to 44 eggs); they have even been reported to dump their eggs in the nest of a Wood Duck.
Gallery
Click on photo for larger image
Non-breeding male (notice eye color)
Photo © by bobsofpa
Viera Wetlands, Florida, USA, 23 February 2007Photo © by CurtMorgan
Parker River National Wildlife Refuge, Newburyport, Massachusetts, USA, 23 November 2007
Reference
- Clements, J. F., T. S. Schulenberg, M. J. Iliff, S. M. Billerman, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2019. The eBird/Clements Checklist of Birds of the World: v2019. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/
- Collins Bird Guide ISBN 0 00 219728 6
- Birdforum thread discussing the taxonomy of some mergansers
- Birds of North America Online
Recommended Citation
- BirdForum Opus contributors. (2024) Hooded Merganser. In: BirdForum, the forum for wild birds and birding. Retrieved 29 March 2024 from https://www.birdforum.net/opus/Hooded_Merganser
External Links
GSearch checked for 2020 platform.