Not that I want this thread to be bogged down in scientific debate (I'll leave that to any threads that mentioned gandalf's fall and him catching up with glamdring!!!), but I've heard that there is a physical limit to the size of land animals (ie I think the large dinasours, diplidocus etc, where about as big as they could get. any bigger and they would have collapsed under their own body weight).
Is there a correlation/limit to the size of a bird I wonder? ie once it gets too heavy it wouldn't matter HOW long the wings are, it couldn't take off?
Apologies if this is boring..........
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