The Siroi Hills in Manipur are home to a unique species of:

The correct answer is: Pheasant.

The Siroi Hills in Manipur are home to a unique species of pheasant called the Manipur Tragopan. It is a large, colorful bird with a long tail and a crest on its head. The Manipur Tragopan is found in the forests of the Siroi Hills, and it is a shy and elusive bird. It is considered to be a vulnerable species, and its population is declining due to habitat loss and hunting.

The other options are incorrect. Wild goats are not found in the Siroi Hills. Lilies are flowers, and antelopes are mammals.