Why Toucans Have Giant Bills

Posted by Queuebot in Animal on July 25, 2009 at 11:59 pm

Do toucans need their giant bills for peeling fruit, attracting mates, warning off predators, or something else entirely?

Glenn Tattersall at Brock University in Canada and his team of colleagues started photographing captive toucans with infrared cameras, which show warm areas as bright and cool areas as dark.

When temperatures rise, the scientists noticed that the toucans’ bills glowed with radiated heat as warm blood flowed into them.  When temperatures dropped, the blood flow would stop and the bills would go dark.

Paleontologists have hypothesized that some dinosaurs used bony head ornaments to shed heat in the same way, but due to a lack of live subjects they haven’t been able to prove this theory.

Images courtesy Glenn Tattersall, via National Geographic

Link – via news

From the Upcoming ueue, submitted by Marilyn Terrell.

 
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Bill Backs

Posted by Miss Cellania in Money & Finance on April 29, 2009 at 11:00 am


Have you ever really taken a good look at US currency? In today’s Lunchtime Quiz at mental_floss, you’ll be shown the buildings on the backs of US bills. Can you match each to the correct denomination? I scored 60% due to educated guessing, since I don’t usually have any cash. You will do better! Link

 
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