The Harlequin Duck has a large range, estimated globally at 100,000 to 1,000,000 square kilometers. Native to Europe, this bird prefers wetland and marine ecosystems. The global population of this bird is estimated at 190,000 to 390,000 individuals and does not show signs of decline that would necessitate inclusion on the IUCN Red List. For this reason, the current evaluation status of the Harlequin Duck is Least Concern.
Harlequin Duck: Small diving duck, blue-gray upperparts and underparts, rust-brown flanks. Back, breast and neck have vivid black-bordered white bars. Tail is dark and relatively long. Gray legs, feet. Feeds on insects, mollusks and crustaceans. Rapid direct flight, often low over the water.
Harlequin Duck: Breeds from Alaska and Yukon south to Wyoming and Sierra Nevada of California, and from southern Baffin Island south to Labrador and Gaspe Peninsula. Spends winters along coasts south to central California and Long Island; also in Eurasia. Preferred habitats include swift-moving streams in summer; and rocky, wave-lashed coasts and jetties in winter.
Generally silent
Gary Owen Dick
Yury Lisyak
The four letter common name alpha code is is derived from the first two letters of the common first name and the first two letters of common last name. The six letter species name alpha code is derived from the first three letters of the scientific name (genus) and the first three letters of the scientific name (species). See (1) below for the rules used to create the codes..
Four-letter (for English common names) and six-letter (for scientific names) species alpha codes were developed by Pyle and DeSante (2003, North American Bird-Bander 28:64-79) to reflect A.O.U. taxonomy and nomenclature (A.O.U. 1998) as modified by Supplements 42 (Auk 117:847-858, 2000) and 43 (Auk 119:897-906, 2002). The list has been updated by Pyle and DeSante to reflect changes reported by the A.O.U from 2003 through 2006.
The Integrated Taxonomic Information System (ITIS) was established in the mid-1990�s as a cooperative project among several federal agencies to improve and expand upon taxonomic data (known as the NODC Taxonomic Code) maintained by the National Oceanographic Data Center (NODC), National Oceanic and Atmospheric Administration (NOAA).
To find the ITIS page for a bird species go to the ITIS web site advanced search and report page at http://www.itis.gov/advanced_search.html. You can enter the TSN or the common name of the bird. It will return the ITIS page for that bird. Another way to obtain the ITIS page is to use the Google search engine. Enter the string ITIS followed by the taxonomic ID, for example "ITIS 178041" will return the page for the Allen's Hummingbird.