Northern Harrier
Circus hudsonius
A slender, low-flying hawk that quarters back and forth over open grassland and marsh. Its distinctive white rump patch makes it easy to identify, even at a distance.
Field Note
Northern Harriers are the only hawk in North America known to sometimes have a harem — one male may mate with up to five females in a single breeding season.
Where to Spot It at ABNC
Gliding low over the grassland and wetland, tilting side to side as it hunts. The white rump patch is a dead giveaway. Look carefully — it often surprises prey by suddenly dropping into the grass.
Why It Matters
Harriers hunt voles and mice, playing an important role in controlling rodent populations in grasslands. They are sensitive to habitat loss and degradation.
Good to Know
The Northern Harrier is a hawk that flies very low over the grass — almost like it's surfing the ground! Look for the white patch on its tail end.