flightless

The answer here is obviously to just ban birds (except for penguins and ostriches and emus, since they're effectively flightless).

In fact, it pretty much was a flightless proto-bird (though scientists believe it may have descended from a flying predecessor).

Examples of retrogressive complexity among natural systems include the many birds and insects which evolve toward flightless variants in island habitats.

They live for up to 2-3 years as flightless nymphs, hunting in both water and on land, and for about 6 months as adults.

The same reasons why many flightless birds continue to have feathers.

You can clearly observe it with flightless birds on small islands.

When a bad guy calls up your company, he should have no idea whether you use a color scheme, mythical animals, sports teams or flightless birds.

For example, losing flight may be more fit in any given generation, resulting in a flightless species that then gets wiped out when a new predator is introduced.

For example, many of them are flightless and tend to freeze when threatened - works well against eagles but is a terrible idea when threatened by a cat.

Moles losing eyesight, flightless birds losing fight musculature and hollow bones once they shifted to new strategies, humans losing the ability to synthesize our own vitamin C when we could get it from a diversified diet.

That translates to 108KG of batteries and 29KG of solar panels using your weight to power ratios - 137KG in total, compared to the rider at 75KW, so your 24 hour solar bird is a sadly flightless before even adding motors, gearboxes electronics and cabling.

It is the world's only flightless parrot, the world's heaviest parrot, and also is nocturnal, herbivorous, visibly sexually dimorphic in body size, has a low basal metabolic rate, and does not have male parental care.

For example: "Think of a giant flightless bird.

American equivalent is 'egghead.'" Just in case anyone had no idea what a "boffin" was and figured it was some kind of flightless bird or something.

It's such a common rule that there's a long Wikipedia page for the exceptions[1], and the first photo is of penguins, labelled "penguins are a well-known example of flightless birds.".

If they said "write more about flightless antarctic birds or we will pull the plug", they would be trying to exercise editorial control, because they'd be making positive assertions about the content of the site.

Flightless birds happen on small island when those habitats are free of significant predators, for example after some extinction event or due to volcanic origin.