Which physical feature remains consistent across both adult sexes and immature harriers and is a key field mark?
Answer
White rump patch
The white rump patch is a reliable identifier present on all harriers—males, females, and immatures—and is visible when the bird is flying away.
Related Questions
To which genus do harriers belong?What term describes the harrier's characteristic, low-level search pattern for prey over open ground?What specific wing posture, appearing as a shallow V-shape, is a key identifier for harriers while sailing?The facial disc of the Northern Harrier strongly resembles that structure found on which other type of bird?What is the primary functional purpose of the harrier's specialized facial disc?In terms of size, how do Northern Harriers often reverse the typical size dominance seen in many other raptor families?Which physical feature remains consistent across both adult sexes and immature harriers and is a key field mark?What constitutes the bulk of the harrier's diet?Where do harriers typically construct their nests?What is the current taxonomic designation for the harrier found in the Americas?