If asked, "what do spiders eat?", my answer would probably include insects, spiders, other arthropods, and maybe birds. I'd never have thought of fish! And yet it seems that fish-eating by spiders is, if not common, then not exactly rare, although other food items still account for most of the spiders' diets. In a paper […]
Continue readingTag: animal behaviour
something reassuringly disgusting…
This post's title comes from Something Fishy where, talking about sea cucumbers, Illya wrote "But there's something else they can do. Something reassuringly disgusting. Something totally Sea Cucumber." I was mildly let down to find he was talking about bioluminescence, & not self-evisceration. Yes, that's right. When threatened (or repeatedly prodded by some uncouth human […]
Continue readinga strange but beautiful bird
In terms of plumage and behaviour, some of the birds of paradise have to be strong contenders in any 'most unusual' list. I mean, take a look at this: (Image source: Wikpedia (Creative Commons)) This is a male Wilson's Bird of Paradise (Cicinnurus respublica), a species that's found only on a couple of small islands […]
Continue reading‘slow life’ – corals and anemones strut their stuff
When I was a kid we used to go to the beaches of the Mahia peninsula most weekends. (Well, memory says 'most weekends' – it might not have been that often!). Sometimes we'd stop at the sweeping sandy shores of Blue Bay, but on other days we'd go round to the exposed rocky coast & […]
Continue readingit’s not all fun & games being a crocodile, you know
Crocodiles (& their relatives, alligators) are generally viewed as top predators. They're 'ambush' hunters1, lunging up out of the water to snatch at their prey at the last moment. But sometimes, they come off second-best. Check out this video on the National Geographic site, of a jaguar stalking, catching, & killing a caiman. And how […]
Continue readingof whale poo, wolves, and spiny s*x
Whales – competing with us for food, or helping to sustain the phytoplankton production on which most life in the oceans depends? The story and video at this link make a good case for the latter. Then there's the wolves – their return to Yellowstone Park in the US has led to a whole cascade […]
Continue readingwhy did the pigeon cross the road?
if I lived in Hawkes Bay I'd be keen to attend this Royal Society public lecture, & I'll certainly be watching the video, which will be available after. It looks like being of interest & value to senior Biology teachers. The ninth lecture in the 10X10 series Why did the pigeon cross the road? […]
Continue readinga creeping assassin
The daughter & her friends play Assassin's Creed from time to time. This little arachnid would fit right in: Photo: Jeremy Miller For this is an assassin spider, one of a number of species (in the superfamily Palpiamanoidea) that prey on other spiders. The assassin spiders have a long history: a combination of fossil & DNA evidence suggests […]
Continue readinga beautiful nightmare
A few weeks back I briefly mentioned the 'bobbit worm' – a rather large polychaete worm of scary appearance (a friend said 'nightmarish' was closer to the mark) and predatory habits. I've noticed on Facebook how interest in any particular subject seems to come in waves, and so it is with this creature. For via […]
Continue readingis this a coat of many colours?
I had to look twice at this undersea Liberace-lookalike before recognising it as an octopus (more precisely, a blanket octopus, Tremoctopus sp.) These beautiful creatures live in the open ocean where they grow up to 2m long. The female in this image (thanks, Science Alert) has unfurled a sort of cape (called a ‘web’ in […]
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