algae
algal bloom
animal
background
background blurred
beak
beautiful
bird
branch
butorides virescens
close up
closeup
color
ecosystem
environmental pollution
fertilizer
green
green heron
habitat destruction
heron
heron eating fish
hunting
isolated
lake
landscape
natural
natural lighting
nature
nature reserve
ornithology
outdoor
outdoors
phytoplankton
pollution
pond
predator
real time
selective focus
striated heron
summer
surface
swamp
telephoto lens
view
water
water bird
water pollution
white
wild
wildlife
定額
Close up isolated image of a green heron (Butorides virescens) walking on a tree branch and looking over a pond which was covered with algal bloom, a big problem for fresh water resources.の素材 [FY310153437261]
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