Кости крыла обыкновенного воробья (Passer domesticus), адаптировано из <a href="//commons.wikimedia.org/wiki/File:Wing_Bones_of_Sparrow.jpg" title="File:Wing Bones of Sparrow.jpg">File:Wing Bones of Sparrow.jpg</a>
<a href="//commons.wikimedia.org/w/index.php?title=User:Retired_electrician&amp;action=edit&amp;redlink=1" class="new" title="User:Retired electrician (page does not exist)">Retired electrician</a>
<span class="int-own-work" lang="en">Own work</span>, adapted from <a href="//commons.wikimedia.org/wiki/File:Wing_Bones_of_Sparrow.jpg" title="File:Wing Bones of Sparrow.jpg">File:Wing Bones of Sparrow.jpg</a> and <a href="//commons.wikimedia.org/wiki/File:Bird_wing_skeleton._Passeriformis.svg" title="File:Bird wing skeleton. Passeriformis.svg">File:Bird wing skeleton. Passeriformis.svg</a>