<P style="MARGIN: 0px">I don't want to come off as a smartass, but NH3 (anhydrous amonia) is not sprayed on fields but is injected or knifed into the soil. Anhydrous means "without water" so the nitrogen immediately goes for any moisture. Once in the soil it is very stable, and you could dig into later and not suffer any ill effects. The same goes for wildlife. If you were to come in contact with NH3 directly, you would suffer severe burns and if it gets into your eyes you will have irreversible eye damage or permanent blindness. In spite of these dangers, it is still an excellent source of nitrogen.</P> <P style="MARGIN: 0px">As for spraying fields. Most are receiving burndown and residual herbicides along with 28% liguid nitrogen. None of these compounds will cause any health effects to wildlife. It may also work to your advantage that fields are getting sprayed. It will concentrate the birds into the hay fields and winter wheat fields where the insects and other good feed are.</P>