'One in a Million' Yellow Cardinal Spotted

Read this earlier. Very cool.

SMSgt Lawrence McCarter SrA Christopher Wright Sgt Randy Wilber SGT Gregory Lawritson Cpl (Join to see) Lt Col Scott Shuttleworth LTC (Join to see) MSG Frederick Otero SFC Pete Kain SSG David Andrews LCDR (Join to see) PO1 Tony Holland SCPO Morris Ramsey SPC Margaret Higgins SGT Jim Arnold SFC William H. PO1 William "Chip" Nagel SGT Charles H. Hawes CPL Dave Hoover TSgt Joe C.

Perhaps he was perched upon, my window sill....and later lured in with a crust of bread.

Thanks CW5 Jack Cardwell for sharing the link to the national geographic web link about the rare Yellow Cardinal.
In 2014 the population estimate for the Northern Cardinal was 120,000,000, if only 1 out of 1 million cardinals would be yellow then approximately 120 should exist.
Since the National Geographic folks seem to insist that yellow cardinals are evidence of illness as opposed to a plumage variation, and the bird in the video seemed to be healthy, I wonder if the yellow cardinal can reproduce or it is sterile.