It is tough being a baby swallow. One have to share the tiny space that is seemingly half the size of a typical nest since it was pasted to a wall. It must suck to be born as a claustrophobic swallow.
Even emptying the bowels is a tricky affair. I saw the middle baby shown above pushing its siblings gently so that it can turn around and drop the poop down to the ground. It then squeezed to make room so that it can turned itself around again.
I have been observing this nest in the National University of Singapore since 2007 in my previous blog post. Every year I will see little chicks sitting here till now. I wonder if they do nest maintenance once in a while?