The Most Unusual Swiftlet Nest !!!

We have seen 90*, 130* and 180* shape nests.

These are common nests shape in every BH.

Those 90* comes from the corners without any corner covers.

The 130* from corners that were installed with corner covers and the 180* when those swiftlet build their nest on straight planks surfaces.

What if these birds build their nest hanging from the ceiling?

It will look something like this picture:

A very rare and strange shape nest will result.

The bird will anchor their nest with two attachments and build their nest like a swing.

A very strange and interesting picture found in the internet.