Patna Bird Sanctuary is a protected area in Uttar Pradesh's Etah district encompassing a lentic lake that is an important wintering ground for migrating birds.
It was founded in 1991 and covers an area of 1.09 km² (0.42 sq mi).
With a lake area of only 1 km² (0.39 sq mi), it is the smallest bird sanctuary in Uttar Pradesh.

The water quality of the lake supports a wide range of avifauna during winter season.
The entire lake area gets covered by profuse growth of macrophytic vegetation of water hyacinth and Potamogeton species during summers.

About 200,000 birds of 300 different bird species frequent the sanctuary.
More than 106 species of migratory and resident birds are known to have their resting habitats around the lake.
The important aquatic birds inhabiting lake are:
Lesser whistling-duck
Graylag goose
Comb duck
Ruddy shelduck
Gadwall
Eurasian wigeon
Indian spot-billed duck
Northern shoveler
Northern pintail
Green-winged teal
Common pochard
Ferruginous duck
Baer's pochard
Tufted duck
Indian peafowl
Common quail
Black francolin
Gray francolin
Little grebe
Asian openbill
Woolly-necked stork
Black-necked stork
Little cormorant
Great cormorant
Purple heron
Cattle egret
Indian pond-heron
Black-headed ibis
Red-naped ibis
Eurasian spoonbill
Black-shouldered kite
Egyptian vulture
Booted eagle
Bonelli's eagle
Shikra
Black kite
Eurasian coot
Sarus crane
Black-winged stilt
Black-tailed godwit
Laughing dove
Greater coucal
Rose-ringed parakeet
Plum-headed parakeet
Long-tailed shrike
Black drongo
Rufous treepie
Ashy-crowned sparrow-lark
Bengal bushlark
Red-vented bulbul
Plain leaf warbler
Ashy prinia
Plain prinia
Common babbler
Oriental magpie-robin
Brahminy starling
Common myna
Bank myna
Purple sunbird
Indian silverbill
Scaly-breasted munia
Patna Bird Sanctuary is a protected area in Uttar Pradesh's Etah district encompassing a lentic lake that is an important wintering ground for migrating birds. It was founded in 1991 and covers an area of 1.09 km² (0.42 sq mi). With a lake area of only 1 km² (0.39 sq mi), it is the smallest bird sanctuary in Uttar Pradesh.
The water quality of the lake supports a wide range of avifauna during winter season. The entire lake area gets covered by profuse growth of macrophytic vegetation of water hyacinth and Potamogeton species during summers.
About 200,000 birds of 300 different bird species frequent the sanctuary. More than 106 species of migratory and resident birds are known to have their resting habitats around the lake. The important aquatic birds inhabiting lake are:
Lesser whistling-duck
Graylag goose
Comb duck
Ruddy shelduck
Gadwall
Eurasian wigeon
Indian spot-billed duck
Northern shoveler
Northern pintail
Green-winged teal
Common pochard
Ferruginous duck
Baer's pochard
Tufted duck
Indian peafowl
Common quail
Black francolin
Gray francolin
Little grebe
Asian openbill
Woolly-necked stork
Black-necked stork
Little cormorant
Great cormorant
Purple heron
Cattle egret
Indian pond-heron
Black-headed ibis
Red-naped ibis
Eurasian spoonbill
Black-shouldered kite
Egyptian vulture
Booted eagle
Bonelli's eagle
Shikra
Black kite
Eurasian coot
Sarus crane
Black-winged stilt
Black-tailed godwit
Laughing dove
Greater coucal
Rose-ringed parakeet
Plum-headed parakeet
Long-tailed shrike
Black drongo
Rufous treepie
Ashy-crowned sparrow-lark
Bengal bushlark
Red-vented bulbul
Plain leaf warbler
Ashy prinia
Plain prinia
Common babbler
Oriental magpie-robin
Brahminy starling
Common myna
Bank myna
Purple sunbird
Indian silverbill
Scaly-breasted munia
Patna Bird Sanctuary