the f/stops here wrote:
Who said a pop-up flash is useless in wildlife photography? Last Thursday I was lucky to find some Blue Grosbeaks withing camera distance as I was using a Canon 100-400 on a 7DII. These birds never got in the sun and my images just didn't look great, so I decided to try the pop-up flash. The birds were 50 to 60 feet from me so I put on my Rogue Safari booster and one of the birds was kind enough to stay around for a portrait.
Very nice. Thank you for posting.