Busy day

We have seen a lot today. Old fishing huts, which nowadays do not function as fishing huts. Still, they are charming.
Extras: I looked into some of the fishing huts and they have big tables for many, so I think they are some kind of party huts. 
Furthermore, we visited a deserted church. It was locked, a little disappointing. A couple of French tourists also thought so, who also had to make do with looking at the outside. It was so beautiful with lots of buttercups on the back. 
Then we went to a bird local. I saw a couple of oystercatchers sitting on a rock. But when I raised the camera the usual thing happened, they flew away. 
Finally, I show a mystery. What on earth is that on the straw. I have no idea. Does anyone know?