In this task, we ask you to rewrite a sentence in simple English without changing its general meaning. Essentially, you want to make the sentence easier to read by using simpler words, utilizing more straightforward sentence structures, and omitting non-essential information etc.

The species most commonly referred to as " pigeon " is the species known by scientists as the rock dove , one subspecies of which , the domestic pigeon , is common in many cities as the feral pigeon .
The feral domestic pigeon is often called the " rock dove " : it is common in many cities .

The rose-ringed parakeet ( " Psittacula krameri " ) , also known as the ring-necked parakeet , is a medium-sized parrot in the genus Psittacula , of the family Psittacidae .
The rose-ringed parakeet is " Psittacula krameri " .

Things became so bitter that , on one occasion , Gates stormed out of a meeting in a huff after a shouting match in which Ballmer jumped to the defense of several colleagues , according to an individual present at the time .

On one occasion , Gates reportedly ran out of a meeting after a shouting match in which Mr. Ballmer defended several colleagues .

