The last of my "5" Star Broad Billed Hummingbird photos shows a completely different coloration. In this case the BBH is dark green with little, if any, hint of blue. Contrast this with the post from yesterday where the BBH looks entirely blue. The coloring does not come from pigmentation in the feather structure, but instead from prism-like cells within the top layers of the feathers. When light hits these cells, it is split into wavelengths that reflect to the observer in varying degrees of intensity. That is essentially how it can look blue from one angle and green from another.
 |
| Broad Billed Hummingbird |
No comments:
Post a Comment