Now let's see what is going on here...I have three children, two dogs and a pigeon.
The pigeon was supposed to be a temporary fixture but it's looking to me like he has had that conversation with someone, who has reliably informed him that children don't leave the nest till they are into their thirties nowadays...
Sorry Mr Fluffy but it's not in either of our interests for you to stick around that long! There are sunsets to cruise around, days of light and promise where warm winds will caress and gently buffet your wings as you stretch them and look to the horizon...go pigeon, go!
I'll let you know if he takes the hint.