The new Weekly Prompt Photo Challenge is Wings.
I thought about swarms of insects but decided that while you can see the insects you can’t see their wings while they’re flying in the swarm.
Then I thought about some of the photos from when I was a member of a small group of birders surveying and recording a winter roost of Gull species on an inland reservoir in south Cheshire, England.
A photo of Black-headed Gulls in winter roosting on Hurleston Reservoir at night. If something disturbs the birds on an edge of the roost they will fly to another side of the roost which is what they’re doing in the photo.