Because they only come to us in winter, it's easy to think that, for all their delicacy (the redwing is the smallest thrush commonly seen in the UK), these are robust birds, nordically indifferent to frost and snow.
The antshrikes (excluding Tamnistes and Pygiptila), antvireos and Herpsilochmus antwrens in clade B are all more or less robust birds with heavy and prominently hooked bills, and many of them have a barred plumage pattern.
It is a robust crowlike bird averaging around 48 cm in length, black or sooty grey-black in plumage with white undertail and wing patches, yellow irises, and a heavy bill.
These constraints are less robust than the bird-mammal calibration (310 Ma), involve smaller numbers of proteins, and probably represent greater underestimates of the true divergence.
Other birds with robust feet, such as guinea fowl and rails, do most of their moving about on foot.
A townwide property reassessment looms, college tuitions soar and our home equity is hardly as robust as that plump bird in the hand we kept peeking at six months ago amid the few local "comparables" on Zillow.com.
Avigdor Cahaner, a genetics professor at Hebrew University of Jerusalem, crossbred these tiny birds with robust broilers and ended up with a featherless chicken that can be mass-produced for the poultry industry.
The coracoid is elongated and the radius and ulna are robust, as in flighted birds, but a particular foramen between a metacarpal and the alular is otherwise only known from flightless birds, such as some ratites, penguins, and several extinct species.
Neurons recorded from awake and anesthetized birds produced robust responses to songs and ml noise.
