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How Birds Breathe

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1 replies
Posted by SandyRichardsBrown on March 19, 2014 at 12:46 PM
http://www.birdwatchingdaily.com/blog/2014/03/13/eldon-greij-describes-amazing-way-birds-breathe/?utm_source=iContact&utm_medium=email&utm_campaign=BirdWatching%20Magazine&utm_content=3-19-2014+ED
Posted by Howard Cheek on March 20, 2014 at 10:09 AM
Interesting article on the increased lung efficiency of birds Sandy, thanx.
Glad they used the cardinal as the example, since I see so many of them here :smile: