Starling nest in loft and large crack my ceiling

Hi all.

So I've had a starling nest in my loft for years sometimes they stay all year other times come back for spring.

Over the last couple of years there's been a small crack in between the ceiling and the wall.

It's now alot worse! The plasterboard is damaged and bits.of the nest are coming through. My 20.month old is sleeping below it and I'm very worried.

I love my wdlife but this is scaring me and I need to removed urgently.

Any positive suggestions?

As you can appreciate my sons safety the most important thing here. 

Many thanks