Definitely safety first, this hard hat hanging from a nail on a beam in the farm shed is as safe a nest site as a hard hat can be!
Risk is very much part of the nesting season: weather, cats, people, predators, its a real challenge.
Our Blue Tits are in a box on a wooden frame that surrounds an oil tank, about 2 meters up and the box is flanked by thorny Pyracantha.
I got a fright one day last week when I saw the adopted tabby cat was back to its old tricks, sitting up on top of the box.. This happened a few years back when the box was sited up a Sycamore tree with a holly growing through it..
|Blue Tit bringing caterpillar to the nestbox|
|Removing a faecal sac from the nest|