During a recent bicycle trip into the State Park next door, Bill and Karen visited a second building of the Birding Center in which they had not previously explored.
After an introductory DVD film, about the birds in this region we checked out the displays.
Here is Karen pushing the buttons to listen to the bird calls of various species in southern Texas.
This exhibit shows how hawks migrate. Starting on the right they find a warm air vortex and ride it high up. When near the top they then glide for miles until they find the next vortex and repeat. This conserves their strength on the long journeys north as their wings are not designed for normal long distance flying, but they are excellent at gliding.
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