I haven't had a big problem with flash on small birds or bluejays. Perhaps because we have been feeding many family generations for years and they are all used to me being around. One question though...I like to take bird shots at high shutter speeds and my flash slows me down. What do you guys do to stop all motion for better feather detail yet wanting fill flash??
Dan (Nikon D800,V2,Sony HX400V,Lumix ZS40) "I don't read, I just look at pictures" - Andy Warhol