Fully agree, except for (e), the parrot would need his millet as well
These older b&w's have been copied around the internet so much over recent years that they have indeed become detached from their origins so are in the 'copyright unknown' category and most sites (inc my former Riversea) have shown them on basis that Dave lists.
I was never challenged over showing them but would have happily withdrawn if any claim had been made, rather than cause a fuss .... although suspect that some who claim copyright would find it hard to substantiate same if challenged in return!
So please Keelman let's share these oldies and enjoy them as we do all older material (being older material ourselves
)