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 Birds, Nature, Photography, spring, wildlife, tagged Aythya marila, Belmont Bay, Canon 50D, Greater Scaup, scaup, Tamron 150-600mm, Woodbridge VA on March 15, 2018| 7 Comments »
Sometimes when I take a photo of a bird, I have no idea what kind it is—I tend to shoot first and ask questions later. That was the case last Friday when I spotted this beauty at Belmont Bay, an area of open water at the confluence of the Occoquan and Potomac Rivers in Northern Virginia. Fortunately some more experienced birders on the What’s This Bird Facebook forum helped me identify it as probably a Greater Scaup (Aythya marila), a type of diving duck.
I had tried to identify the bird on my own using a field guide that I have at home and some on-line resources, but I confess that I got stuck. I couldn’t figure out if this was a Greater or Lesser Scaup. Most of the information on distinguishing between the two species is comparative, i.e. the head is narrower or more oval. It’s hard to make a comparison when you see only a single member of a species.
As you can see from the photo below, conditions were a little strange and there were distinct color bands in the water. I am not sure exactly what caused them, but perhaps it was the angle of the sunlight or the way the wind was moving the water. Whatever the case, it made for a pretty distinctive color change in the top third of this image that almost looks artificial.
© Michael Q. Powell. All rights reserved.
