Northeast Herring Gull – Ottawa, ON 19 December 2018

Northeast American Herring Gull (Larus argentatus smithsonianus)

Presumed Northeast American Herring Gull (Larus argentatus smithsonianus). Ottawa, ON. 19 December 2018.

This note is to document a presumed Northeastern-type American Herring Gull (Larus argentatus smithsonianus) I encountered on the Rideau River in Ottawa, ON on 19 December 2018. I took as many photos of it as I could and got a few open-wing shots to get a look at its primary pattern. It was the only American Herring Gull around and I only had a few Great Black-backed Gulls (including a presumed pair) to compare and judge size against. Based on those comparisons, I assumed it was a female but its size was still impressive compared to the average (ie. Great Lakes HERG) Herring Gull. It had an icy pale base or basal half to the bill and a fairly rounded head. I assume p10 was still growing as it was a bit short. I would rate the primaries using Primary Codes described by Jonsson and Mactavish (2001): p10 = 4; p9 = 2; p5 = 3; p4 = 0.

Northeast American Herring Gull (Larus argentatus smithsonianus)

Northeast American Herring Gull (L. a. smithsonianus). Ottawa, ON. 19 December 2018.

Northeast American Herring Gull (Larus argentatus smithsonianus)

Northeast American Herring Gull (L. a. smithsonianus). Ottawa, ON. 19 December 2018.

Northeast American Herring Gull (Larus argentatus smithsonianus)

Northeast American Herring Gull (L. a. smithsonianus). Ottawa, ON. 19 December 2018.

Northeast American Herring Gull (Larus argentatus smithsonianus)

Northeast American Herring Gull (L. a. smithsonianus). Ottawa, ON. 19 December 2018.

Northeast American Herring Gull (Larus argentatus smithsonianus)

Northeast American Herring Gull (L. a. smithsonianus). Ottawa, ON. 19 December 2018.

Northeast American Herring Gull (Larus argentatus smithsonianus)

Northeast American Herring Gull (L. a. smithsonianus). Ottawa, ON. 19 December 2018.

Northeast American Herring Gull (Larus argentatus smithsonianus)

Northeast American Herring Gull (L. a. smithsonianus). Ottawa, ON. 19 December 2018.

Northeast American Herring Gull (Larus argentatus smithsonianus)

Northeast American Herring Gull (L. a. smithsonianus). Ottawa, ON. 19 December 2018.

Northeast American Herring Gull (Larus argentatus smithsonianus)

.Northeast American Herring Gull (L. a. smithsonianus). Ottawa, ON. 19 December 2018.

Northeast American Herring Gull (Larus argentatus smithsonianus)

Northeast American Herring Gull (L. a. smithsonianus). Ottawa, ON. 19 December 2018.

Northeast American Herring Gull (Larus argentatus smithsonianus)

Northeast American Herring Gull (L. a. smithsonianus). Ottawa, ON. 19 December 2018.

Northeast American Herring Gull (Larus argentatus smithsonianus)

Northeast American Herring Gull (L. a. smithsonianus). Ottawa, ON. 19 December 2018.

Northeast American Herring Gull (Larus argentatus smithsonianus)

Northeast American Herring Gull (L. a. smithsonianus). Ottawa, ON. 19 December 2018.

Northeast American Herring Gull (Larus argentatus smithsonianus)

Northeast American Herring Gull (L. a. smithsonianus). Ottawa, ON. 19 December 2018.

Northeast American Herring Gull (Larus argentatus smithsonianus)

Northeast American Herring Gull (L. a. smithsonianus). Ottawa, ON. 19 December 2018.

Northeast American Herring Gull (Larus argentatus smithsonianus)

Northeast American Herring Gull (L. a. smithsonianus). Ottawa, ON. 19 December 2018.

Northeast American Herring Gull (Larus argentatus smithsonianus)

Northeast American Herring Gull (L. a. smithsonianus). Ottawa, ON. 19 December 2018.

Northeast American Herring Gull (Larus argentatus smithsonianus)

Northeast American Herring Gull (L. a. smithsonianus). Ottawa, ON. 19 December 2018.

Northeast American Herring Gull (Larus argentatus smithsonianus)

Northeast American Herring Gull (L. a. smithsonianus). Ottawa, ON. 19 December 2018.

Northeast American Herring Gull (Larus argentatus smithsonianus)

Northeast American Herring Gull (L. a. smithsonianus). Ottawa, ON. 19 December 2018.

Northeast American Herring Gull (Larus argentatus smithsonianus)

Northeast American Herring Gull (L. a. smithsonianus). Ottawa, ON. 19 December 2018.

Northeast American Herring Gull (Larus argentatus smithsonianus)

Northeast American Herring Gull (L. a. smithsonianus). Ottawa, ON. 19 December 2018.

Northeast American Herring Gull (Larus argentatus smithsonianus)

Northeast American Herring Gull (L. a. smithsonianus). Ottawa, ON. 19 December 2018.

Northeast American Herring Gull (Larus argentatus smithsonianus)

Northeast American Herring Gull (L. a. smithsonianus). Ottawa, ON. 19 December 2018.

Northeast American Herring Gull (Larus argentatus smithsonianus)

Northeast American Herring Gull (L. a. smithsonianus). Ottawa, ON. 19 December 2018.

Northeast American Herring Gull (Larus argentatus smithsonianus)

Northeast American Herring Gull (L. a. smithsonianus). Ottawa, ON. 19 December 2018.

Northeast American Herring Gull (Larus argentatus smithsonianus)

Northeast American Herring Gull (L. a. smithsonianus). Ottawa, ON. 19 December 2018.

Northeast American Herring Gull (Larus argentatus smithsonianus)

Northeast American Herring Gull (L. a. smithsonianus). Ottawa, ON. 19 December 2018.

Northeast American Herring Gull (Larus argentatus smithsonianus)

Northeast American Herring Gull (L. a. smithsonianus). Ottawa, ON. 19 December 2018.

Northeast American Herring Gull (Larus argentatus smithsonianus)

Northeast American Herring Gull (L. a. smithsonianus). Ottawa, ON. 19 December 2018.

Northeast American Herring Gull (Larus argentatus smithsonianus)

Northeast American Herring Gull (L. a. smithsonianus). Ottawa, ON. 19 December 2018.

Northeast American Herring Gull (Larus argentatus smithsonianus)

Northeast American Herring Gull (L. a. smithsonianus). Ottawa, ON. 19 December 2018.

References Jonsson, L. and Mactavish, B. (2001). American Herring Gulls at Niagara Falls and Newfoundland. Birders Journal, volume 10, no. 2 (April and May 2001), pp. 90-107. Available online: http://www.jeaniron.ca/Gulls/2016/Jonsson&MactavishAmHerringGullsNiagaraNFL.pdf

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