Magpie or snag breac: What’s in a name?

PHILLIP O’Sullivan Beare wrote a book about Ireland while he was exiled in Spain following the Battle of Kinsale.

It’s title was Zoilomastix and it appeared about 1625.

It interests me because it contains an extremely accurate description of the greater spotted woodpecker and states that this bird was common in the forests of Munster at the time.