This seems to happen a lot with egg auctions and the seller always says their camera is broken or some excuse such as that. I think they probably just don't have a good picture of their birds (or their birds aren't picture-worthy), so they take the easy way out and use a picture of a really nice bird they lift from someone else. I wouldn't have any problem with that, except that they almost never say the bird pictured isn't theirs in the auction description (and they don't ask permission to use the images in almost all cases). Most of them will be honest if questioned, but I think they need to disclose that information in the description.
I do feel that they are hoodwinking people by not being honest about it from the get-go.
I do feel that they are hoodwinking people by not being honest about it from the get-go.