Posted in Birds, Nature, Photography, wildlife, Winter, tagged Aythya affinis, Aythya marila, Canon 50D, Greater Scaup, Lesser Scaup, Occoquan Bay National Wildlife Refuge, scaup, Tamron 150-600mm, Woodbridge VA on January 2, 2021| 9 Comments »
At this time of the year I am always looking for birds in the waters off of Occoquan Bay National Wildlife Refuge, like this scaup, a small diving duck, that I spotted on Monday. There is a Greater Scaup (Aythya marila) and a Lesser Scaup (Aythya affinis) and they are quite similar in appearance.
For the sake of identification, I am going to assume that this is a “Greater” one—I do not want to damage its self-esteem by calling it “Lesser.”
© Michael Q. Powell. All rights reserved.
Posted in Birds, Nature, Photography, spring, wildlife, tagged Aythya affinis, Aythya marila, Canon 50D, Greater Scaup, Lesser Scaup, Occoquan Bay National Wildlife Refuge, scaup, Tamron 150-600mm, Woodbridge VA on March 4, 2020| 1 Comment »
The wind was blowing strongly on Monday morning, kicking up lots of waves in the waters off of Occoquan Bay National Wildlife Refuge. In the deeper water I could see a small group of scaups bobbing up and down among the waves. Were they Greater Scaups (Aythya marila) or Lesser Scaups (Aythya affinis)?
I confess that I can’t tell the difference between the two species. I was content to get shots of both genders, especially the female with the distinctive white markings at the base of her bill.
© Michael Q. Powell. All rights reserved.
Posted in Autumn, Birds, Nature, Photography, wildlife, tagged Aythya affinis, Aythya marila, Canon 50D, Greater Scaup, Lesser Scaup, Occoquan Bay National Wildlife Refuge, Tamron 150-600mm, Woodbridge VA on November 25, 2018| 2 Comments »
I have been seeing increasing numbers of scaups off of Occoquan Bay National Wildlife Refuge, but they stayed in the deep water, so I never managed to get a close look at them.
I think they are Greater Scaups (Aythya marila), but there is also a chance that they are the similar-looking Lesser Scaups (Aythya affinis). The differences between the two species are subtle enough that I do not feel at all confident in distinguishing between the two. The white stripe behind the bill indicates that the one in the first image is a a female. I think the one on the left in the second photo may be an immature female and the one on the right is almost certainly a female.
© Michael Q. Powell. All rights reserved.
