| Feathers of infested birds are discolored by mite excrement and eggs, and the skin is scabby. |
| Feathers must be white, or nearly so, to make a good clear shade of electric blue. |
| Feathers could have elongated on the forelimbs and lateral margins of the elongated tail in connection with leaping and parachuting out of trees. |
| Feathers are, therefore, most reasonably interpreted as having evolved primarily in association with flight, rather than for thermoregulatory purposes. |
| Feathers are cut to make quill pens that the students will write with, and hex signs are painted in the style of these traditional barn designs. |
| Feathers which cover and help mould the shape of the bird are called tetrices. |
