Pigeon

A pigeon appeared yesterday on my driveway. Very tame he/she actually followed me into my kitchen. 
He didn’t want to leave Joy I gently brushed him out and then I didn’t realise he was in my garage all night!

When I opened it he walked out I gave him seeds and water and he is sitting outside my back door??

He doesn’t seem frightened of my cat either. 
What is going on?

He’s cream and fawn coloured and no rings seen.