Re: Spinosaurs ate pterosaurs

[David Marjanovic <david.marjanovic@gmx.at>]

> In all these cases, the calorific content of the food item MUST justify
the
> expenditure of energy needed to acquire it.

Well said. Jumping up from the ground to catch flying insects would be too
costly in comparison. So would parachuting from a tree to do the same be -- 
not the parachuting itself, but the need to climb back up the tree after
each insect caught that way.