Thank you Boben for this nice registered cover from India. The m/s was released in 2010. Both the birds it shows are very common. About the Rock Pigeon you can have a look in older posts.
House Sparrow (Passer domesticus): It can be found in most of Europe and Asia. It has 12 subspecies. It feeds mostly on seeds and insects but it is also an opportunistic bird.

Thank you Boben for this nice postcard from India. The 2009 penguin stamp comes from a set of two. The other stamp shows polar bears. The set was issued in 2009 under the topic Preserve the polar regions and glaciers, a topic under which many countries issued stamps last year. About the Emperor Penguin you can read in the post about Chile's cover.