1.0Field Stationhttps://uwm.edu/field-stationField Stationhttps://uwm.edu/field-stationrich600338<blockquote class="wp-embedded-content" data-secret="cwXmVeLrva"><a href="https://uwm.edu/field-station/bug-of-the-week/viceroy/">Viceroy Butterfly (Family Nymphalidae)</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://uwm.edu/field-station/bug-of-the-week/viceroy/embed/#?secret=cwXmVeLrva" width="600" height="338" title="“Viceroy Butterfly (Family Nymphalidae)” — Field Station" data-secret="cwXmVeLrva" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script type="text/javascript"> /* <![CDATA[ */ /*! This file is auto-generated */ !function(d,l){"use strict";l.querySelector&&d.addEventListener&&"undefined"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!/[^a-zA-Z0-9]/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),o=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),c=new RegExp("^https?:$","i"),i=0;i<o.length;i++)o[i].style.display="none";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute("style"),"height"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):"link"===t.message&&(r=new URL(s.getAttribute("src")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener("message",d.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",function(){for(var e,t,s=l.querySelectorAll("iframe.wp-embedded-content"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute("data-secret"))||(t=Math.random().toString(36).substring(2,12),e.src+="#?secret="+t,e.setAttribute("data-secret",t)),e.contentWindow.postMessage({message:"ready",secret:t},"*")},!1)))}(window,document); //# sourceURL=https://uwm.edu/field-station/wp-includes/js/wp-embed.min.js /* ]]> */ </script> Viceroy Butterflies are famous for being mimics of Monarch butterflies. Monarch caterpillars eat only milkweed foliage, and that makes them both bitter and toxic. After their first experience with Monarchs, birds generally leave them—and, by association, Viceroys—alone. There are at least two generations of Viceroys per summer; the early broods live out their life cycles in a few months, but the larvae of the final brood of summer will overwinter as tiny caterpillars, wrapped in leaves of one of their food plants; willow is favored, but they’ll also eat poplar, aspen and some apple/plum/cherry leaves.https://uwm.edu/field-station/wp-content/uploads/sites/380/2009/05/viceroy-1.jpg