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animal
aquatics
avian
biodiversity
bird
birding
birdwatching
chitwan
conservation
duck
ecology
ecosystem
fauna
ferruginea
flock
fowl
freshwater
group
habitat
india
indian
lagoon
lake
male
marsh
national
natural
nature
nepal
ornithology
park
plumage
pond
river
ruddy
shelduck
swamp
swimming
tadorna
vertebrates
water
waterbirds
waterfowl
wetland
wild
wildfowl
wildlife
zoology