英文關鍵字
africa
african
beak
bill
bird
chroicocephalus
cirrocephalus
cleaning
ethiopia
feather
feathers
gray
grey
greyheaded
gull
headed
her
hooded
isperching
lake
nature
ornithology
perch
perching
plumage
rock
top
wild
wildlife
wing
ziway
英文關鍵字
africa
african
beak
bill
bird
chroicocephalus
cirrocephalus
cleaning
ethiopia
feather
feathers
gray
grey
greyheaded
gull
headed
her
hooded
isperching
lake
nature
ornithology
perch
perching
plumage
rock
top
wild
wildlife
wing
ziway