File:Mallard on Seedskadee National Wildlife Refuge (41188034191).jpg

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Have you ever watched an American dipper wading in a mountain stream and dipping its head underwater for an extended period? These mallards were doing the same thing in a riffle on Seedskadee NWR. The swift water flowing over the shallow rocks (a riffle) makes a great spot for aquatic insects needing lots of oxygen, like stoneflies. I had used a kick net to collect insects in this same spot weeks earlier, and found an abundance of large to medium sized stoneflies. I was not able to get a photo of a stonefly in their bills, but am pretty shure they were eating stoneflies. They methodically worked over nearly every rock in the riffle over the course of a half hour.

Photo: Stonefly eating mallards on Seedskadee NWR

Tom Koerner/USFWS
Date
Source Mallard on Seedskadee National Wildlife Refuge
Author USFWS Mountain-Prairie

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This file is licensed under the Creative Commons Attribution 2.0 Generic license.
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
This image was originally posted to Flickr by USFWS Mountain Prairie at https://flickr.com/photos/51986662@N05/41188034191. It was reviewed on 17 May 2018 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

17 May 2018

Public domain
This image or recording is the work of a U.S. Fish and Wildlife Service employee, taken or made as part of that person's official duties. As a work of the U.S. federal government, the image is in the public domain. For more information, see the Fish and Wildlife Service copyright policy.

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United States Fish and Wildlife Service
United States Fish and Wildlife Service

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Date/TimeThumbnailDimensionsUserComment
current04:57, 17 May 2018Thumbnail for version as of 04:57, 17 May 20183,100 × 2,196 (3.99 MB)OceanAtoll (talk | contribs)Transferred from Flickr via #flickr2commons

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