英文關鍵字
algae
animal
beak
beautiful
bird
burrow
cliff
colony
current
day
ecology
evening
fast
fauna
feather
feeding
flock
flow
fly
flying
grass
group
insects
lake
landscape
nature
nest
nests
outdoors
pond
quick
reflection
ripples
river
sand
scenic
splash
spring
steep
summer
swallow
swallows
swift
their
view
water
wave
wild
wildlife
wings