I'm a huge fan of corvids, but evidence that the crowbox works is dubious [1]. Incidentally if you enjoy reading about crows take a look at the author's other

I'm a huge fan of corvids, but evidence that the crowbox works is dubious [1]. Incidentally if you enjoy reading about crows take a look at the author's other posts on that blog. She's a scientist who writes about them (and her work) very frequently. __________ 1. https://corvidresearch.blog/2015/03/12/a-scientists-thoughts-on-the-crow-box/ https://corvidresearch.blog/2015/03/12/a-scientists-thoughts...