Field Notes

David Fix
38. by David Fix on July 02, 2011 at 11:41 pm

In regions where these ducks are common breeding birds, females with ducklings join with other females-and-broods until "creches" of dozens of mergansers have formed. These usu assemble in the lee waters of river eddies, at sandbars, and around creek and river confluences; they can persist through summer. The males, in the meantime, having nothing to do with the family, molt into a female-like plumage. The appearance of widely scattered pairs of Common Mergansers along rivers swollen with runoff in March and April, with the streamside trees still bare, is a welcome sign of spring.

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Citation: Personal Experience. I observe this regularly, highly confident.

Pissed Off
67. by Pissed Off on July 04, 2011 at 05:04 pm

On 25 June 2011, I observed and photographed a female swimming with a brood of 17 chicks on the upper reaches of the Metolious River in Central Oregon. According to the Birds of North America (online paid version), the average clutch size is ten eggs.

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Citation: Personal Experience. I observe this regularly, highly confident.

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Date Submitted By Count
03/12/15 Steven Mauvais, OR #
01/31/15 Dave Irons, OR 1
01/31/15 Dave Irons, OR 25
01/13/15 Marlowe Kissinger, OR 15
01/06/15 Marlowe Kissinger, OR 12
01/10/15 Dave Irons, OR 17
11/15/14 Bob Archer #
05/04/14 Rob Bonner, AZ #
04/22/14 Steven Mauvais, OR #
07/23/12 Chelsea Bassanese, BC #
06/23/13 Nathan Cutler, ON 1
08/13/13 Dan Mitchell, OR 2
03/14/13 Dan Mitchell, OR 1
06/28/13 Nina Bohn 12
05/26/13 dawn villaescusa, OR #

Recent Activity

Activity Date & Time
Sandy Leaptrott added Common Merganser to their Salish Ponds, City of FairView, Multnomah County, smart list 1/10/2013 at 2:34PM
Grant Canterbury added Common Merganser to their Westmoreland Park smart list 11/20/2011 at 4:54PM
dawn villaescusa added Common Merganser to their Lincoln City, OR smart list 10/02/2011 at 6:36PM
Dan Mitchell added Common Merganser to their Koll Business Park, Beaverton, Oregon smart list 9/23/2011 at 7:10PM
Pissed Off added a note to Common Merganser Notes 7/04/2011 at 5:04PM
David Fix added a note to Common Merganser Notes 7/02/2011 at 11:41PM