Flight

To:	"Birding-Aus" <>
Subject:	Flight
From:	"Terry Pacey" <>
Date:	Mon, 9 Sep 2002 12:43:40 +1000

We all accept that birds are wonderful examples of flight and therefore
forget about it.

Just a short time ago, I was watching Rainbow Lorikeets feeding in a tall
Silky Oak (grevillia robusta) behind our place.  Suddenly, one of the birds
flapped its wings and took off vertically and with another flap moved to a
branch about 4 metres directly above the branch it left.

This was accomplished with the two or three flaps of the wing previously
mentioned and then continuing straight up with the wings folded.  It was
like a rocket launch.

What amounts of energy are required for a bird of the size and weight of a
Rainbow Lorikeet to glide in a vertical direction?

Terry Pacey

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