rectrices

Rectrices do not appear until at least eight weeks of age.

Instead the second pair of rectrices (both R2 feathers) are the first to drop.

In some species, for example, either remiges or rectrices make a sound during flight.

The wings were large and the tail was moderate with pointed rectrices.

The tail is generally black, except for the outermost rectrices, which are white.

Females lack the elongated rectrices, and are largely white below.

Rectrices are always paired, with a vast majority of species having six pairs.

All true finches have 12 remiges and 9 primary rectrices.

The base of the outer rectrices was partially blackish blue.

In poor light it may appear all black, except for the strongly contrasting white outer rectrices.

Most ratites have completely lost their rectrices; only the ostrich still has them.

Most birds' tails end in long feathers called rectrices.

Its wings are carried upon the tail, which has a minimum of 12 rectrices and an oil duct.

Within subspecies, males and females had the same modal numbers of rectrices.

Many grouse species have more than 12 rectrices.

Females lack the elongated rectrices and have a mainly green plumage.

The outer rectrices are barred black and white.

In modern birds, the rectrices attach to these.

Their common name, whitetips, refers to the conspicuous white tips on the central rectrices of the males.

They have longish legs and appear tailless, with (seemingly) only 8 rectrices.

It has four long rectrices (flight feathers on the tail), which may represent an important step in feather evolution.

The name streamertail is a reference to the greatly elongated rectrices of the males.

It often flicks its outer rectrices to the side "in scissor-like fashion".

The quality of later born young as measured by growth rate and the number of fault bars in rectrices did not seem to be reduced.

Rectrices are always numbered from the centermost pair outwards in both directions.