Birds in a feeder

The feeder is handmade by me. Birds were there all the time in similar quantities.
I was amazed by the speed and crowd they were making...

Full Flickr version:

Canon 6D, Canon EF 100-400L ƒ4.5-5.6 IS USM, at 400mm, ISO2000, 1/320, ƒ/5.6