英文關鍵字
bird
water
eggs
lake
incubates
look
around
guards
against
sky
nest
delta
river
coot
wildlife
blue
middle
thickets
crowded
sits
natural
wild
young
reeds
rallidae
juvenile
chick
baby
crowding
cute
bottom
cygnet
swan
background
bean
below
feather
environment
clear
nature