Colin Purrington<p>Reed bench at the John Heinz National Wildlife Refuge (Tinicum, PA). Found a few plugged by mason bees but not as much activity as you'd expect on a warm spring day. <a href="https://flipping.rocks/tags/bees" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>bees</span></a> <a href="https://flipping.rocks/tags/philadelphia" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>philadelphia</span></a> <a href="https://flipping.rocks/tags/phragmites" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>phragmites</span></a> <a href="https://flipping.rocks/tags/osmia" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>osmia</span></a></p>