Who will never experience a demographic crisis! Pigeons! Most birds breed chicks in the swing and stop there. But not pigeons! Definitely not pigeons! These creatures breed all year round. Just because we don't see it doesn't mean it doesn't happen. And in general, I must admit that rarely anyone has seen pigeon chicks. But no, they are not born as adults 馃榿 It's just that parents warm their bald babies for a long time.
As for year-round breeding, it wasn't a joke. The only nuance is that winter chicks do not always survive or only one survives. At some point, parents can just abandon the nest. I've seen something like this many times. Sometimes I managed to save the chicks, and sometimes, unfortunately, I found them already frozen. That's the kind of pigeon parents!