[6] The site is also part of an Important Bird and Biodiversity Area (IBA) listed by Birdlife International.

On the protected islands of Central Syvash – Churyuk and Kuyuk-Tuk – which were less affected by anthropogenic impact, true steppe phytocenoses have been preserved.

More than 1 million birds (swallows, ducks, marsh terns, waders, mute swans, shelducks, herons, etc.)

are registered in seasonal clusters during the year; including rare, vulnerable and endangered species listed in the Red Book of Ukraine, such as kentish plover, black-winged stilt, eurasian oystercatcher, white-headed duck, Pallas's gull and white-tailed eagle.

Nearby in the steppes of Prysyvashshya the great bustard, the little bustard, the Demoiselle crane and common crane, the hen harrier, the pallid harrier, golden eagle, greater spotted eagle, saker falcon, peregrine falcon, lesser kestrel.

[citation needed] Steppe grasses contributed to the formation of large populations of acclimatized animals.

In addition, the Byriuchyi Island has created favourable conditions for the existence of aboriginal species of fauna, such as the grey hare, fox and acclimatized raccoon dog.

In total, 250 species of vertebrates live on the territory of the Azov-Syvash National Nature Park, 48 of them are listed in the Red Book of Ukraine.