17 March 2010

Crayfish nurseries?

Up at the top of our 1.3 acres, a long, long way from the dam at the bottom, these holes regularly appear. Many visitors have told me they are freshwater crayfish burrows, but what are the little critters burrowing for? The holes always appear in the same area, which is rather soggy and where I suspect some underground spring activity. But there's plenty of wet clay ground down near the dam. The clay that is piled up neatly around the top of the burrow is renewed regularly. If they're crayfish holes, what are they for? I once found one of the crays floating in my swimming pool not far from this area, so I know they do come up the hill this far. I just don't know why. Must have something to do with having young, I would guess.


Anonymous said...

looks like snake holes to me!--
Sister D

Chartreuse said...

Not snakes, D. Our other Sis found website which confirms they're freshwater crayfish holes. The pix on that site (at http://museumvictoria.com.au/forest/ observations/crayfish.html) is so similar to mine, it could be the same one!

Stafford Ray said...

Crayfish do dig bourrows, usually in the banks underwater but I guess on the east coast with eels making life difficult, producing young away from free water makes sense! How intriguing! By the way D, C is right, snakes don't dig they just sneak into ready made ones.

Chartreuse said...

D is American and shares her fellow countrymen's fears about Australian critters. However, on her most recent visit, she was much braver and came quite near a good-sized huntsman (albeit on the OTHER side of a glass door!)

Anonymous said...

We have hundreds of those type holes around here - ours are some sort of crabs I think (where near the beach).

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I started this blog in 2009 when I became a full-time caregiver. My husband had been diagnosed a few years earlier with primary progressive aphasia. Over the next four years until his death in 2013, we went on a journey of discovery about this rare condition. My blog is about what I learned, how we both coped and how the journey deepened our love and appreciation of each other. Allen’s journey is over, but mine goes on.