Ketingan Hamlet is located isolated in the middle of fishponds on the eastern coast of Java. It takes about 45 to 60 minutes motorboat ride from Bluru Kidul dock. Along the trip once start sailing, there are plastics  garbage along the rives, very sad. 

But once enter the mangrove area, you will enjoy the sphere of the vast river, the mangrove trees, and some faunas from birds to reptiles. We can see various birds, but i see so many white birds flying above rivers and some grey bird and kingfisher bird. 

According to https://www.profauna.net, thera are about 23 bird species in Ketingan mangrove area such as: 

Blekok Sawah/Javan pond heron (Ardeola speciosa)
Kowak Malam Kelabu/ Black crown night heron (Nycticorax nycticorax)
Kowak Malam Merah/ Nankeen Night Heron (Nycticorax caledonicus)
Raja Udang Biru / Cerulean Kingfisher (Alcedo coerulescens)
Udang Punggung Merah/The Oriental dwarf kingfisher (Ceyx erithacus)
Kuntul Kecil / The Little Egret(Egretta garzetta)
Kuntul Karang/ Pacific Reef Heron (Egretta sacra)
Kokokan Laut/ Mangrove Heron (Butorides striatus)
Srigunting Hitam/ THe black drongo (Dricrurus macrocercus)
Bubut Jawa / The Sunda coucal (Centropus nigrorufus)
Cucak Kutilang/ The Sooty-headed Bulbul (Pycnonotus aurigaster)
Merbah Cerucuk/ The yellow-vented bulbul (Pycnonotus goiavier)
Layang-layang Batu/ The Pacific swallow (Hirundo tahitica)
Walet Sapi/ The glossy swiftlet (Collocalia esculenta)
Dara Laut (Sterna Sp.)
Pecuk Padi Kecil/ The little cormorant (Phalacrocorax niger)
Cekakak Sungai / The collared kingfisher (Todirhampus chloris)
Kacamata biasa/ Lowland White-eye  (Zosterops palpebrosus)
Prenjak Rawa/ The yellow-bellied prinia (Prinia flaviventris)
Kirik- Kirik Senja / The chestnut-headed bee-eater (Merops leschenaulti)
Bentet Kelabu/ The long-tailed shrike (Lanius schah)
Cipoh Kacat/ The common iora (Aegithina tiphia)
Bambangan Hitam (Dupetor flavicollis)
Cerek (Charadrius Sp.)
Bondol Jawa (Lonchura leucogastroides)
Cabai Jawa (Dicaeum trochileum)
Tekukur Biasa (Streptopelia chinensis)

Regarding how many birds species there are in the location, actually this hamlet is suitable for birding or bird watching. 

Annually the hamlet holds Nyadran ceremony to thank god for good fish harvest. The hamlet preserves syncretism over Islam and Hindu Java belief and tradition. 

There is a popular site among locals, the grave of Princess Sekardadu from Banyuwangi, the monther of Sunan Giri one of nine saints spread Islam over Java.

This village and mangrove is only known for domestic market for pilgrimage to Princess Sekardadu and enjoy boat riding along river. It is still not yet promoted for foreign travelers, even though it is not so far from Surabaya City, due to the lack of amenities and cleanliness along the boat ride.