Some species are extremely rare which makes them valuable. This can be counterintuitive. Their very rarity implies either an evolutionary dead end or an inability to adapt. An overall genetic weakness. Pigeons are just the opposite. They are everywhere. Every country I have visited has pigeons milling about, cooing, eating, coating the world beneath them a nasty white.
This was one of many that visited me on the 24th floor of the Marriott hotel in India. The 24th floor is a roof top oasis in the bustling Indian city of Pune. From here, I watch the insanity of India traffic, the soaring hawks, and the ubiquitous pigeon.