Kottayam: Eurasian spoonbills, a rare migratory birds commonly found in North India, arrived in Kumaranalloor in Kottayam, heralding a rise in mercury levels in the state.

The birds were spotted on the agricultural field behind the house of Raju Vallikkunnathu, a former MG University official and poet.

The birds migrate to the warmer Southern regions once the North India comes under the grip of winter. These birds used to migrate to Tamil Nadu and Andhra Pradesh, which are considered hotter than Kerala.

However, environmentalist view the unexpected visit of spoonbills to Kerala as a sign of unusual rising temperatures in the state.

Recently, migratory birds like Glossy Ibis and Painted Stork were also spotted here. These are also birds which travels in search of warmer locations.