I lived in NYC for over 10 years and never saw a baby pigeon…I asked other NY’ers and they too had never seen one…why is that??
Is it that they don’t leave the nest until they are full grown? or maybe they don’t look like pigeons when they are young so you don’t realize you are looking at one??
Maybe someone who has raised pigeons can help. 
Farmwoman
I used to work in a building which had columns at the top of which pigeons would commonly nest. I often saw nestlings. I don’t recall, however, seeing any birds that looked like “teenagers.” My guess would be that they stay close to the nest until fully fledged and grow pretty rapidly after that.
That’s pretty much it–by the time the babies are fledged, they look about the same as adults. Here is a page with a picture of some pigeon hatchlings.
Thanks…mystery solved!
I always thought that was weird…there must be millions of pigeons in NYC and you would think that you would see one from time to time…even a dead one…but you never do! :o
Farmwoman
I saw a dead pigeon in Central Park yesterday. 
But it wasn’t a baby at least.
Be grateful. I had a pigeon nest next to my office for a while. The babies are * ugly *. Not cute and fluffy – just scrawny, unkempt looking creatures clustered together in a big mound o’ pigeon droppings and twigs.
Ah, perhaps the spring meeting of some local Tom Lehrer Appreciation Society.