As background and FYI, Griffon Vultures are found all throughout the Pyrenees and northern Spain. This is their home range.
Their traditional menu was scavenging dead farm animals, mostly stillborns, or otherwise dead pasture animals, that is until the EU rules forbade farmers from leaving dead animals on pastures. This was done in an effort to stem diseases like Mad Cow and Hoof and Mouth disease. The farmers were made to retrieve deceased animals from high pastures and to bury or burn them, in a sanitary manner.
This deprived the Griffon vultures of their usual diet. As one consequence, the birds got clever and started going after anything they could catch. This included cats, dogs, foxes, squirrels, and anything else small, furry and warm blooded that they could catch and kill.
In one notable incident, reported in the media at the time, a French day hiker was partially consumed by these birds after she fell off a trail in the Pyrenees. One day late in April 2013, two women were day hiking in the Pyrenees, east of Saint Jean Pied de Port (NOT on the Camino). One women lost traction and fell down a steep slope with her rucksack on. This frequently results in a broken neck.
This happened just as I started my first Camino in late April 2013, from Saint Jean Pied de Port.
Her hiking partner immediately called 112. In the 45-minutes it took the emergency responders to arrive at the lower location to retrieve the women, the Griffon Vultures had consumed all exposed or accessible flesh. The subsequent post mortem exam revealed that the woman had indeed died from a broken neck in the fall, and was well dead when she hit the bottom of the slope some 35 meters below.
There is no danger whatsoever from these huge and beautiful birds. Just don't take a nap in the open... just sayin...
I know is it late for Halloween... Sorry about that.... But this is a true story, I saved the links to the media reports at the time.
Hope this helps...