Aside from these rules-of-thumb, remain open-minded and observe any other behaviors. If for example, a blackbird (normally a bird of good-omen) flies in from the right side of your divining area, lands on the grass, walks around, seemingly in no hurry, then flies off to the left, what does that tell you? Was the bird paying any attention to you or disregarding you? Some bird behaviors aren’t covered in the rules, and you may need to ruminate on them afterwards to determine the message being sent. This is where the ‘art’ in bird divination comes in, and where your own intuition will need to come into play.
When performing your bird-divining ritual, set a time limit. It can be fifteen minutes, half an hour, forty-five minutes, or an hour or more. It’s up to you how long. If in the span of time you specify, no significant bird-activity can be observed, then assume they either don’t have a message for you, or don’t wish to communicate with you right now. Thank all the relevant parties you invoked in the ritual, then leave. Try again another day.
Do not throw out seeds, nuts, bread crumbs, or junk food at the start of the ritual in order to lure birds into the divining field. You want the birds’ visits to be spontaneous. A libation or a pinch of tobacco, yes, throwing out bird-bait, no.
With all the rules and regulations out of the way, here is a chart and a glossary to help you with your bird divining:

This is fascinating. Studying metaphysics has always been a hobby of mine. Great blog!!!
Thank you! I’m glad you find it interesting.