I was riding my bike in my neighborhood when I saw a fiddler crab skitter across the blacktop. I stopped immediately to catch it because when it comes to marine life, I’m like a dog who can’t help but chase the rabbit. Plus, I don’t often see marine life skittering across blacktop in the middle of the day in June. I caught it. It was a red-jointed fiddler crab (this post reminds me that I need to write a post about fiddler crabs, but that’s for later).
Fiddler crabs live in burrows in beaches, salt marshes, and mangroves, not roads. But it’s not unusual to see fiddlers on roads that have been built right through the place where they live. In parts of coastal Virginia where the roads cut through the marsh, you can see herds of fiddler crabs roaming the road like cattle. The question is, why do fiddler crabs cross the road? One reason is that the road used to be a marsh where fiddlers grazed. Now they may cross the road for better pastures. Build a road through my house and I’m liable to wander onto it on my way to the kitchen for an avocado. But mind your honking in my house, I have a 2-year-old trying to sleep and an anxious cat who needs therapy.
To-get-to-the-otherside-for-a-snack is a fine answer for why fiddlers cross the road when the road is in their backyard. But the road I found the crab on today was at least 100 feet uphill from the marsh with a forest in between. I found seven wandering fiddlers total. What drives a fiddler to hike through the woods and then onto the highway? Fiddler crabs eat algae and little bits of dead plant found in the soil. I don’t think blacktop or frontyards or woodlands offer much forage for a fiddler.
My working hypothesis is that because we’ve had so much rain that it made the water too fresh for these marine crabs. But that hypothesis was shot down when I found a fine fiddler party in the marsh. My best guess is that because the temperatures were low and the road and forest were damp, they were simply brave crabs exploring new lands. There have been a lot of For Sale signs around. Now might be a good time to move.
In truth, I don’t really know why these crabs traveled so far. As I sit here daydreaming in rain, the why of it leaves my mind, like the crabs, to wander.
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