Your bird isn't anywhere near the setting sun so nobody can tell it's from a sunset. Then, your exposure is wrong. f11???? That just underexposes the image and looks like a plain technical error. The Great Egret, which is an all-white bird, looks gray. The bluish sky looks gray. To get a sunset effect the bird needs to be flying near the horizon/setting sun -- and then you expose the sunset, not the bird (get a silhouette-type image). Here are some arthur morris examples:


1/1000 sec f/6.3 ISO 400


http://www.birdsasart.com/Great-Blue-Heron-stretching-red-sunset-_G0R8001-Fort-DeSoto-Park,-St.jpg


1/600 f/5.6 ISO 2000


http://gallery.mailchimp.com/94ad23bd96f48a1de2ca612b3/images/675FCCF896274E97AD8BA6E8E651741C_ArthurMorris09.jp g


Now those are Arthur Morris but the idea is to get the bird near the source of the sunset -- the sun!!! Then expose for a silhouette.


Don't worry about ISO 400 on any body. Use it freely, it'll help you w/ shutter speed; for BIF a shutter speed of 1/1000+ is required.


hope that helped..


brendan