[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]

Re: Spinosaurs ate pterosaurs




David Marjanovic wrote:

Had it been a parachuter, it would have had to climb back up the height of
the entire tree each time it had caught one insect. Less efficient even than
jumping up from the ground, right?

I suppose that depends on the rate of success. Admittedly, no modern animal that I know of catches insects by leaping from the ground into the air, or by snatching them mid-air while parachuting or gliding. The birds and bats that do this are powered fliers and have excellent maneuverability.

I have seen a bird do this. Granted, it was a faster flier, but in this instance, it simply leaped up to grab a passing horsefly and dropped back down to the ground. I'm not sure which species of bird it was, but if there are any bird specialists here - I'm in Dartmouth, Nova scotia, Canada and the bird was under pigeon size, prolly six to seven inches long, black, with an orange/brownish beak, and the it's plumage may have had a hint of brown on the edges of it's feathers.