We have ended up with a few more birds than we should have (I don't even know if the number we're allowed in our area is still the same since we became a big 'Supercity', and quite frankly I don't want to know!).
We are very lucky to be on a 1200m/sq section, though we have a storm water culvert running through the back which makes at least a third of the property unusable, though great for growing weeds for hungry chickens. We mostly have bantams - 4 Old English Games (which are really tiny and don't lay many eggs but are such little personalities), 2 bantam Wyandottes, then we have 2 Houdans and 2 Lavender Araucana, and we recently hatched a booted bantam and a few pekin bantams. I give the odd dozen eggs away (mostly to our elderly neighbour) but for the number of birds we have we don't get that many eggs - there's always between 1-6 broody bantams most of the year and none of them are high production breeds.
I really wanted a booted bantam and found a breeder who would take back boys. Only one booted bantam egg hatched which thankfully turned out to be a girl. The other three that hatched were pekin bantams and they all turned out to be girls too (unlike our previous hatch where no booted bantam eggs hatched and most of the pekins turned out to be boys who went back to the breeder). These 4 gorgeous girls ended up getting sick - I do not know how as I don't free range (due to the neighbour's cat who is a very accomplished bird catcher) and they are still young so separated from everyone else (and mostly indoors!), but having put them on antibiotics I don't feel right about re-homing my extras (plus they are such a tight-knit group I'd feel downright mean splitting them up).
And kids don't make it any easier! It was hard enough for our daughter to give back the pekin boys (they started crowing at 6 weeks old so it was a great relief for me)! Hatching that first lot of eggs was our first home schooling project as our daughter was getting badly bullied at school (and not just by other students). Our son started his before school visits and quickly started not wanting to go because of how rough the other children were in the playground. I never thought I would be a home schooler but here I am. And they adore their chickens, as do I.