My biggest optical problem while birding is during overcast, cloudy winter days. It seems most days are that way during this time of year. It is right now in fact! Lighting is terrible and so is bird ID. There is usually some distance from me where I can ID a bird and a little more distance no ID is possible because the color/markings are gone. I first tried to help that with a Meopta B.1 7X50..that's not really enough magnification though. Maybe a 8 or 9 X50 or so might help. I kicked around the idea of an FL 8X56 but decided it would just be too large/heavy for general birding. An HT 8X54 might just be the ticket.....though I think a 8.5 or 9 X50 would be about perfect....splitting hairs I know!