A bird decided to move in...

[Lizardking]

Something caught our dogs attention in a dead tree in our garden.. turned out to be a bird. We believe that he/she are gonna build a nest.. we keep our fingers crossed that our cats will stay away.
Can someone give an ID?

 

[swede]

looks to me like it could be some kind of either warbler or plover

 

[Lizardking]

Ok, you don´t happen to know the swedish names?

 

[swede]

i dont sorry