Since these binoculars will be used outdoors, possibly in rough terrain, it is important to look for a pair which is built to last and stand up to the odd fall or scrape. Careful consideration needs to be made whether a new birder or one who has spent some time in the field and acquired some expertise.
As an experienced wildlife photographer my top priority was optical quality, and I did alot of research before deciding on this pair. The best binoculars for astronomy use are 7 x 50 or larger. Pay close attention to the numbers that are printed on the binoculars or quoted in the ad.
Since they can be slung around the neck on a cord, it s easy to spot the prey and drop the binoculars to pick up the rifle. A simple coating was devised to prevent this, by allowing more light to pass through the lens, and less to be reflected back.
Monoculars meant as a toy for children have magnifications of only three or four times and they are very cheap. Galactic clouds and star clusters look dim when viewed by the naked eye, but with binoculars they are much clearer. Others have comfortable straps so you can wear them around your neck.
Binoculars are the perfect accessories for hiking, fishing and hunting. So, get a good pair of binoculars and enjoy the birding.