Answer is a place name within the British Isles and contains the name of a bird.
5. This bird could work in a mine.
Can't stop thinking canary but can't find a place called Canary
Stuck on this,my last one. Thought mynah but again can't fit it.
Reading the question only the canary bit matters and they did work in mines, mainly before the Davy safety lamp gave a more scientific measure of the presence of gas.