This is a sample guest message. Register a free account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members through your own private inbox!
I've seen a lot of these around and was wondering what kind of nest it is. Most of the ones I saw were about 8cm long and on the tips of small tree branches.
From the few articles I have found it seems like no-one knows the mechanism which causes them to form, even when they know what/who is responsible. Any ideas or links to how it might happen?