The whooping crane pair were good parents and even though the chick appeared healthy, as a precaution, biologists checked the health of the chick at regular intervals to make sure he was gaining weight and remained disease free.  When staff entered the whooper exhibit area, the parents immediately responded with a “unison” call, a call that expressed a warning and a united front to protect their chick and their territory.  In the middle photo, the male is displaying a “ruffle threat”, raising his feathers and bowing his head in a low-intensity threat to the intruders.  After the chick is captured and taken away for examination, the male spreads his wings and stands tall in a power display as the pair wait for the chick’s return. 

  


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