Prospecting..?

After a summer in the Alicante region, the Yellow-legged gull "G_1394" came back to its colony the 24th of January. Few days later it returned to Alicante. Is this a prospection or the gull found something wrong with the colony and move to Alicante to breed ?  The prospecting behaviour is still poorly studied but increasing evidence suggests it is more common than previously thought. Stay tuned to know what "G_1394" will do in early spring.