I beg you to remove the suggestion involving fishing line and thread. Those and similar things (baling twine for one example) get entangled around birds' legs and the harder the birds try to get free of it, the more entangled they become, often ending up with it wrapped around their wings and entire bodies. Many birds of many species have died horrible, lingering, deaths due to such items. The Montana Osprey Project has been trying to educate the public about the hazards to birds (not just ospreys) posed by these items. They have seen many cases of bird deaths from them and have even posted a photo (it is on their Facebook page, I THINK) of one osprey totally wrapped up in baling twine that it had picked up somewhere and brought back to the nest. When that bird was found, it was dangling from the nest, dead, wrapped in the twine. It was the male of a pair of birds and it had died dangling below its nest at the same time its mate was incubating their eggs on the nest above him.
I beg you to remove the suggestion involving fishing line and thread. Those and similar things (baling twine for one example) get entangled around birds' legs and the harder the birds try to get free of it, the more entangled they become, often ending up with it wrapped around their wings and entire bodies. Many birds of many species have died horrible, lingering, deaths due to such items. The Montana Osprey Project has been trying to educate the public about the hazards to birds (not just ospreys) posed by these items. They have seen many cases of bird deaths from them and have even posted a photo (it is on their Facebook page, I THINK) of one osprey totally wrapped up in baling twine that it had picked up somewhere and brought back to the nest. When that bird was found, it was dangling from the nest, dead, wrapped in the twine. It was the male of a pair of birds and it had died dangling below its nest at the same time its mate was incubating their eggs on the nest above him.