• BirdForum is the net's largest birding community dedicated to wild birds and birding, and is absolutely FREE!

    Register for an account to take part in lively discussions in the forum, post your pictures in the gallery and more.

Search results

  1. fazalmajid

    Real calcium fluorite in NL binoculars?

    The subtle distinction between (calcium) fluoriTe and fluoriDe (glass)...
Top