I'm after a pair of binoculars for visiting Nature Reserves to get a better view of colonies of birds on the water (at some distance) etc.
Separately I'm interested in aviation and being able to view airplanes that fly overhead (about 15,000-30,000 feet) - not necessarily to absolute detail (registration number etc.) but to be able to see more than I can with the naked eye.
Is there a strength/specification of binoculars I could buy that would be optimal for both of these? Or should I look at 2 separate pairs?
I'm just a "hobbyist" and don't have a lot of money to spend, I'm just looking for a "consumer" spec item.