movie trivia: name of movie generally regarded as first sound movie?

Questions

On which Scottish Island is the stone circle known as the Ring of Brogar?

Which bird is also known as Cuddys duck because St Cuthbert protected it?

Whooper, mute and Bewicks are all types of what?

Merrythought is one of the popular names for which bony structure on a bird?

What is the common name for the furcula in birds?