The inner part of the greater coverts show a large spot of white at the tips: the other coverts are dark with black shafts; and those of the outer part of the wing, and the flight feathers
, dark with the shafts white.
The plumage of your breast and abdomen are powder bluewhile your wings, flight feathers
, and tail feathers grade cobalt toturquoise.
In adults (AHY/ASY), these features included, but were not limited to, the presence of uniformly glossy-black wing coverts and flight feathers
, relatively darker tertials (but without distinct contrasts between adjacent feathers), and relatively fresh, broad, and truncate outer primaries with white tips.
Worcester, "The scaling of the size and stiffness of primary flight feathers
," Journal of Zoology, vol.
There was a distinct change from the white, downy, chest feathers to the tawny-brown flight feathers
on the wing and back.
All but the most complicated asymmetrical flight feathers
have shown up so far in dinosaurs, Prum notes.
The adult is mainly brown except for the paler head and neck, blackish flight feathers
, distinctive white tail, and yellow bill and legs.
"We have a lovely magpie, Frederica, rescued from a trap that had cut her flight feathers
off one wing.
We don't know what sort of bird it is; at first we took it to be a baby magpie but now that it's a little older - it patently isn't; it's the size of a jackdaw but has a huge beak like a crow and it makes a noise like a crow but it has white flight feathers
Trimming the primary flight feathers
on one wing will keep them from flying away, although domestic birds may willingly stay in the comfortable surroundings you provide.
The Four-Winged Dinosaur: Microraptors and the Bird Origin Debate is the DVD rendition of an episode from the public television series NOVA, detailing the discovery of and scientific experiments surrounding fossils of an amazing, recently discovered dinosaur species microraptor, a small dinosaur with flight feathers
on all four of its limbs!
The purpose of trimming flight feathers
is to prevent the bird from flying too far or too high.