G-25 Filyos bird sanctuary is located by the sea in the area where the Filyos river reaches to Blacksea. There is Black Sea in the north of the area, Filyos river in the east, Filyos castle in the west and Sefercik village in the south. There are wetlands, reeds, beach, bushes and streams in the area. It has a rich diversity of habitats and so a rich bird diversity. It is an area heavily used by coastal birds and many songbirds during migration periods. According to the bird observations carried out by Biologist and ornithologist Dr. Mustafa Sözen and other bird

watchers in the province since 2005, 280 out of 312 bird species recorded in the province can be observed in this area. This is the area where the Rough-legged Buzzard, Common Scoter and Asian Desert Warbler were photographed for the first time in Türkiye. The area has the richest bird diversity in both Zonguldak and the entire Western Black Sea Region in Türkiye.