Buff-faced Pygmy-parrot
... that, measuring a mere 8.6 cm (3.4 in) long, the Buff-faced Pygmy-parrot is the world's smallest species of parrot?
... that, measuring a mere <span about="#mwt45" data-mw='{"parts":[{"template":{"target":{"wt":"convert","href":"./Template:Convert"},"params":{"1":{"wt":"8.6"},"2":{"wt":"cm"},"3":{"wt":"in"},"abbr":{"wt":"on"}},"i":0}}]}' id="mwFK0" typeof="mw:Transclusion">8.6</span><span about="#mwt45" typeof="mw:Entity"> </span><span about="#mwt45">cm (3.4</span><span about="#mwt45" typeof="mw:Entity"> </span><span about="#mwt45">in)</span> long, the <b id="mwFK4"><a class="mw-redirect" href="./Buff-faced_Pygmy-parrot" id="mwFK8" rel="mw:WikiLink" title="Buff-faced Pygmy-parrot">Buff-faced Pygmy-parrot</a></b> is the world's smallest species of <a href="./Parrot" id="mwFLA" rel="mw:WikiLink" title="Parrot">parrot</a>?