especially when it is a messy collection of twigs. Let's assume this one is a house wren's nest, known to be messy. The bird was very eager to finish this house for its little ones and hence hurried with whatever it could find. :) Just that it is a house wren that lays silvery grey eggs. :P
Let me know if you are interested in buying this one.
Made with a combination of two colours of wire with oval steel gray beads used as eggs. This can be used as a pendant. Earrings, if you wish can be made with the beads used for the eggs.
To give an idea of the size, here is another picture: