While generally at home on land and not capable of sustained flight, they can propel themselves over a 2-3 foot wall if startled.

It was the first sustained flight for the fleet since their launch several weeks earlier.

The engine was inadequate for sustained and controlled flight.

The wings are shorter and have a more sustained flight than that of the pratincoles.

They averaged 2,070 miles per hour over a 17-kilometer straight away course, then held 80,257 feet to establish a world record for sustained horizontal flight.

The second problem was how to determine the power needed for sustained flight.

He will keep his sustained flight later on, the better for the practice.

None of these were successful in achieving sustained flight, so Vuia abandoned them.

I don't think in the whole range of our literature we have a finer sustained flight than that.

Juveniles become capable of sustained flight two weeks after fledging.