In my local woods, in late summer freshly emerged males and females spend ages feeding up on Teasle Flower Heads in order to build up food reserves for the long winter hibernation. Then they are a doddle to photograph.
However, they have an annoying trait: I have never seen a feeding or resting Brimstone with it's wings open .... ever in over 60 years of observations.
Cotswold Cockney is the name
All aspects of Natural History is my game.
A fluke really! It was trapped in my greenhouse. I was trying to get any photo from inside when I noticed it was 'wedged' open winged in a corner, no vertical room to close its wings. So I rushed outside and took it through the glass! Before it had another fluttering session looking for a way out.
I suppose I should try to do a lot of work on it to remove the most obvious signs of being behind a dirty bit of glass. isolate the butterfly and put it on a more 'natural' background.
Yeah, put a tree branch behind it, like it was sitting on a tree, sunnin itself. Could teel from pic it was inside somewhere. Before I knew how (this year) I got many pics from butterflies or moths that happened to fly in my open bedroom window. Not a great practise, but you can make it look real, like taken outside "natural" but personally I would not do it. Go ahead with brinstone and see what you get.
My most interesting Brimstone shot was when I was observing a courting pair. After snapping the female wings open on a fence wire it dived into the grass. I put my hand nearby and the male landed on me twice! That was a surprise...