A fascinating study of fossilized bird pooh narrows the species down to bearded vultures that were living in the area 29 thousand years ago!
Heres the study: https://www.nature.com/articles/s41598-022-25288-x
Characterisation of coprolites confirms the presence of a Bearded Vulture nesting site in Portugal 29.000 years ago
Since 2018, large quantities of coprolites have been found in archaeological excavations at Lagar Velho, a well-known area where significant remains of human occupation from the Upper Palaeolithic were found. To analyse the coprolites, researchers did a direct comparison with modern Bearded Vulture scats. The cylindrical shape, diameter, pointed extremities and homogenous porous texture were some of the criteria that enabled identification.
More at the VCF: https://4vultures.org/blog/29-000-years-old-bearded-vulture-nesting-site-found-in-portugal/