英文關鍵字
animal
atricilla
aves
background
beak
beautiful
behavior
billed
bird
birds
blue
delawarensis
duck
feather
flight
flock
green
gull
harmony
lake
landing
landscape
larus
laughing
leucophaeus
maximus
natural
nature
off
ornithology
outdoor
park
pond
reflection
reserve
ring
river
royal
sanctuary
sandvicensis
sandwich
sea
seagulls
sky
summer
synchronized
taking
tern
thalasseus
variety
water
wetlands
white
wild
wildlife