BDeed's picture

Round hill Hawker

Observed: 27th September 2012 By: BDeed
Merseyside BioBankThe Wildlife Trust for Lancashire, Manchester and
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Odd behavior, spent a long time sat on the log prodding and probing all over the wood surface with its 'tail-end', walking over it with leg like appendages (stylus?).

Species interactions

No interactions present.


chrisbrooks's picture


Southern Hawker females will often lay eggs into rotting wood at the waters edge, it sounds like this is what it was doing or trying to do.

BDeed's picture


So does this mean that the Nymph is capable in as a predator on land also?

I had been wondering this as the Common Darters were also laying in what were clearly ephemeral pools and it occurred to me that the nymphs may be able to survive to some extent at least temporarily on land..

RoyW's picture


The larvae of all dragonflies and damselflies in the UK require water for their survival.
Some species will lay their eggs near. or above, water, and in these species the larvae finds water quickly after hatching (when the egg first hatches the 'pro-larvae' are inside a membrane which breaks when they reach water after kind of 'bouncing around randomly').

Most larvae in the UK can survive temporarily outside of water, and older larvae near to emergence as adults can breath air, but unless there is water nearby that they can find they are not likely to survive on land (although it is thought that a few species elsewhere in the world may live in damp terrestrial habitats as larvae). It is possible that there may be species that can survive temporary drying out of pools by burrowing into the mud and becoming inactive - but there is currently no evidence of that being the case. Most species that breed in ephemeral pools manage this by having eggs that do not hatch quickly after laying, and larvae that develop very quickly. By the time the eggs hatch, autumn or winter rain means that there is water in the ponds, and the larvae complete their development and emerge as adults before the ponds dry out again in the summer.