While my mother was visiting Utah she was able to see how California Gulls chase and feed on Brine Flies, it is fascinating feeding behavior. As my mom watched, I photographed.
California Gull feeding on Brine Flies 1
The gull starts out standing on the edge of the Great Salt Lake. The Brine Flies can bee seen in this image floating on the hyper saline lake surface.
California Gull feeding on Brine Flies 2
Then it begins to run and the Brine Flies lift off from the sand and water surface. All of the brown colored specks on the shoreline are the pupal casings of the Brine Flies.
California Gull feeding on Brine Flies 3
As the gull gains momentum it lifts its wings and more flies take to the air…
California Gull feeding on Brine Flies 4
Then the gull starts to catch the flies by opening and closing its bill as it runs along.
California Gull feeding on Brine Flies 5
The Brine Flies fan out in an undulating wave in front of the gull as it races along snatching them from the air
California Gull feeding on Brine Flies 6
When the flies thin out in front of the bird the gull slow down
California Gull feeding on Brine Flies 7
And come to a stop.
California Gull feeding on Brine Flies 8
The gull rests a few moments and begins chasing the Brine Flies again. This frame shows the gull a little further from the shoreline and the flies lifting up from the sand.
California Gull feeding on Brine Flies 9
Again the gull grabs the flies from the air with its bill.
California Gull feeding on Brine Flies 10
And comes to a halt again. I have no idea how many flies a California Gull catches when it runs along the shoreline, it would be interesting to know though.
All of these images were taken using my Nikon D300 with my lens resting on my Noodle, f6.3, ISO 500, with shutter speeds ranging from 1/2000 to 1/3200 and all of them were taken using natural light. These images are a challenge to create because at times the camera tries to focus on the mass of flies instead of the bird.
There are more images of California Gulls exhibiting this feeding behavior on this post titled California Gulls feeding on the Brine Flies of the Great Salt Lake.
Life is good.
Mia
Click here to see more of my California Gull photos plus facts and information about this species.
I was wondering about the focus on the flies, too. Wow, what a series … not only stunning but also amusing. I loved this one.
Thanks Ingrid, amusing is a great way to describe this behavior because it is!
Nice action shots Mia!
Thank you Jeremy!
A super series of this gull behavior Mia. I imagine they can get quite a bill full, opening and closing their bill like that while running. I can also imagine the frustration of the camera focusing on the flies while trying to photograph the gull 😉
Larry, it can be a problem when the camera wants to autofocus on the flies not the bird but I love the challenge! Thanks for your very kind comments Larry.
Wonderful post Mia, I had no idea gulls behaved in such a manner, never mind that they eat flies.
Thank you Susan, it is fascinating to watch the California Gulls feed on the flies.
You got some really nice images of that whole process. Pretty amazing what birds do to feed if I do say so myself. Carol
Thank you Carol, I was pleased with how the images came out.
The poor California Gull, swamped with flies. Great pictures.
Thanks Bob, it was a lot of fun to photograph these gulls.
What a fascinating action sequence! Hopefully the flies kept away from you!!
Thank you Tammy, the flies don’t bite, they just tickle the skin. Thanks for commenting
Wonderful post Mia, I am always so jealous of you to have such excellent photography opportunity location up there.. So a friend and I are planning a visit maybe as soon as next week… Any good tips on were to go please let me know.
Bill, I’ve sent you an email with some birding locations you should visit. I think you will enjoy them a lot!
Thanks much for your comment.
Super shots Mia! I’ve felt like this Gull when going for French Fries a few times…
Thank you Laurence! I’ve felt like this too when going after French Dip with Au Jus 🙂
Great post Mia! This is something I have never seen before.
Thanks Steve, the behavior is fascinating to see and photograph.
wonderfull serie with a great action of the gull, good job mia ☺
Very, very interesting, Mia! Great shots!