Free images results:
 

Perch pictures, stock photos and images

 
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Vultures Stock Photography
Author: Mary7800
Black Bird Stock Photography
Author: Qmedia
Duck Stock Photo
Author: Ichtor
Lori Royalty Free Stock Photography
Author: Pilarin
Sparrow Royalty Free Stock Photo
Author: Ichtor
Sparrow Royalty Free Stock Image
Author: Ichtor
Damselfly Royalty Free Stock Photo
Author: Sloth92
Dragonfly Royalty Free Stock Photos
Author: Rkhalil
Dragonfly Stock Photos
Author: Rkhalil
Falcon Stock Images
Author: Folderol
Falcon Royalty Free Stock Photos
Author: Pamelajane
 
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Also, here are some commercial RF-licensed images that match your search criteria:  
Big perch Royalty Free Stock Images
Author: Crisod