Maybe I've not seen these butterflies before this summer since there are actually several types of Sulphers indigenous to Wisconsin. I remember checking a few months ago to see if my camera's colors were going weird because I couldn't believe the pink trim that these butterflies were exhibiting in my folders.
As with all of these "butterfly-hummingbird-etc." photographs that I'll be uploading: they are all hand held using a Canon EF 70-300mm 1:4-5:6 IS USM with extension tubes.