Age Hasn't Slowed Down This Texas Birder By Stella M. Chávez • Aug 26, 2013 TweetShareGoogle+Email At 97, bird guide Karl Haller is still teaching people about all kinds of winged creatures. Credit chemisti / Flickr NPR's Wade Goodwyn recently set out on a bird-watching adventure at Hagerman National Wildlife Refuge with veteran guide Karl Haller. Haller's 97 years old and shows no signs of giving up what he loves to do. Hear Goodwyn's tale here. TweetShareGoogle+Email Related Content Drought + Zebra Mussels = New Water Restrictions For Some N. TX Cities 3 years ago Biologists Report Spread of Zebra Mussels 4 years ago Zebra Mussel DNA Found In Additional Area Lakes 4 years ago View the discussion thread.