Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Tail feather physical characteristics – Male vs Female
| Male tail feather | Female tail feather | |
|---|---|---|
| Length (base to tip) | 40.49 ± 5.96 cm | 19.09 ± 0.79 cm |
| Rachis diameter * | 350 ± 30 µm | 250 ± 40 µm |
| Barb density index # | 0.68 | 1 |
The difference in male and tail female feather diameter can clearly be seen at the level of the ramogenic zone.
The barb density index = barb density in the distal vane/barb density in the proximal vane
