red-billed quelea
... that the red-billed quelea is the most numerous undomesticated bird species on earth, with an estimated population sometimes peaking at 1.5 billion?
... that the <b id="mwA3I"><a href="./Red-billed_quelea" id="mwA3M" rel="mw:WikiLink" title="Red-billed quelea">red-billed quelea</a></b> <i id="mwA3Q">(flock pictured)</i> is the most numerous undomesticated bird species on earth, with an estimated population sometimes peaking at 1.5 billion?