Free images results:
 

Ibis pictures, stock photos and images

 
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Ibis's Royalty Free Stock Photography
Author: Nickr
White Bird Royalty Free Stock Photo
Author: Joseph
White Bird Stock Images
Author: Joseph
Bird Royalty Free Stock Images
Author: Jameshearn
 
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Also, here are some commercial RF-licensed images that match your search criteria:  
White Ibis Stock Photo
Author: Franky
Sacred ibis Stock Images
Author: Rgbe
White Ibis Stock Images
Author: Saorsa