As one moves away from the equator towards the poles, species...

Species diversity decreases as we move away from the equator towards the poles.

Colombia is located near the equator and has about $1400$ species of birds.

India is mostly in the tropical region and has more than $1200$ species of birds.

New York is in the temperate region ($41^{\circ}$ N) and has $105$ species of birds.

Greenland is in the polar region ($71^{\circ}$ N) and has only $56$ species of birds.

Therefore, Greenland harbours the lowest number of bird species among the given regions.

Answer: Greenland