Eastern Phoebe (<i><a href="//commons.wikimedia.org/wiki/Sayornis_phoebe" title="Sayornis phoebe">Sayornis phoebe</a></i>) nest with one Brown-headed Cowbird (<i><a href="//commons.wikimedia.org/wiki/Molothrus_ater" title="Molothrus ater">Molothrus ater</a></i>) egg
<a href="//commons.wikimedia.org/wiki/User:Galawebdesign" title="User:Galawebdesign">Galawebdesign</a>
CC BY 3.0
<span class="int-own-work" lang="en">Own work</span>