Named for Circus pygargus, or Montagu’s harrier. {It belongs to the family of the Accipitridae and is on the Dutch Red List of birds endangered in the Netherlands.} (M 33792; M 34089) _ _.
Discovered on 24-9-1960 in Palomar by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T.