Robuta

https://stevenround-birdphotography.blogspot.com/2016/11/harlequin-ducks-from-iceland.html Steve Round Wildlife Photography: Harlequin Ducks from Iceland Bird and wildlife photographs from a full time UK based photographer wildlife photographyharlequin duckssteveroundiceland https://wildfidalgo.blogspot.com/2013/11/harlequin-ducks-and-friends.html Harlequin Ducks and Friends This seems to be a banner year for Harlequin Ducks (Histrionicus histrionicus) in Deception Pass State Park. Off and on, I have seen o... harlequin ducksfriends https://www.fws.gov/species/harlequin-ducks-histrionicus Harlequin Ducks (Histrionicus) | U.S. Fish & Wildlife Service harlequin ducksfishwildlifeservice https://www.usgs.gov/publications/evaluation-bursal-depth-indicator-age-class-harlequin-ducks Evaluation of bursal depth as an indicator of age class of harlequin ducks | U.S. Geological Survey We contrasted the estimated age class of recaptured Harlequin Ducks (Histrionicus histrionicus) (n = 255) based on bursal depth with expected age class based... https://www.usgs.gov/publications/do-wintering-harlequin-ducks-forage-nocturnally-high-latitudes Do wintering Harlequin Ducks forage nocturnally at high latitudes? | U.S. Geological Survey We monitored radio-tagged Harlequin Ducks (Histrionicus histrionicus) to determine whether nocturnal feeding was part of their foraging strategy during winter... https://www.usgs.gov/publications/long-term-monitoring-program-evaluating-chronic-exposure-harlequin-ducks-and-sea Long-term monitoring program: Evaluating chronic exposure of harlequin ducks and sea otters to... We found that average cytochrome P4501A induction (as measured by EROD activity) during March 2014 was not elevated in wintering harlequin ducks captured in... long term monitoring