Hi all
now that spring comming, many migrating birds are flying and resting in the county side on their way north. I had a chance to take pictures with my nikon D300 and 18-200m, but at 200mm the image was not that sharp and the zoom range was a little far ro get all the details. I was wondering what other zoom lens that could help me get closer and capture more details. Bare in mind that i don't usually shoot wild life so i'm not looking to buy a very expensive, long zoom lens

thank you for
Dr. M. Al-Qatam