Definition: In this task, you need to generate an appropriate title for the given summary of some paragraph. The generated title must be short and should include the main topic of the given text. Your summary should be less than 20 words long.
Input: Two rare birds from southern Europe that were spotted building a nest at a nature reserve in Lincolnshire might stay over winter, the RSPB has said.

Rare glossy ibis might stay at Frampton Marsh over winter