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BRDBRAIN  June 2014

BRDBRAIN June 2014

Subject:

Mottled Duck (Anas fulvigula fulvigula)

From:

Joseph Morlan <[log in to unmask]>

Reply-To:

Joseph Morlan <[log in to unmask]>

Date:

Sun, 29 Jun 2014 12:12:13 -0700

Content-Type:

multipart/mixed

Parts/Attachments:

Parts/Attachments

text/plain (41 lines) , MottledDuckDSCN6556.jpg (41 lines)

3 April 2014. Wakodahatchee Wetlands, Palm Beach County, Florida, USA. 

The Florida population is now recognized as a separate subspecies (A.f.
fulvigula) from the allopatric Texas and Louisiana population (A. f.
maculosa).  Florida birds have a yellower bill, paler and less distinctly
marked plumage.   

The population breeding in coastal South Carolina has been determined from
genetics to be introduced from A. f. maculosa rather than a natural range
extension from Florida.  

This is a male. The female has an orange bill and the male has a yellow
bill.  Females also have broader buff fringes on the body feathers giving
them a subtly lighter overall appearance.  

The Mexican Duck (A. p. diazi) is genetically closer to the Mottled Duck
than it is to the Mallard with which it is currently lumped.  Current
classification is untenable.  See....

http://azfo.org/journal/mottled_duck.html

The main threat to this species is hybridization with feral Mallards.

Nikon P510 Coolpix Point-and-shoot.


-- 
Joseph Morlan, Pacifica, CA
"It turns out we're very good at not seeing things" - Jack Hitt

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