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BillTre
Science Advisor
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This is like stupid pet tricks:
Hmm. That sounds like the white cockatoos around here who sure like to migrate their turds widely...Andy Resnick said:(Turdus migratorius) [...]
Those claws are vicious!berkeman said:Little fishy's next to last thought -- "I wonder what that shadow is...?"
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(from Facebook today)
Many animals have an escape reflex that is triggered by increasingly large dark areas in their visual field (like a shadow getting larger as something (a predator) is getting closer.berkeman said:Little fishy's next to last thought -- "I wonder what that shadow is...?"
I noticed the same thing in a pond near my home. Floods had made the pond much larger, and tiny fish were swimming near the edges. But whenever I tried to get close enough to discern what species they were, the whole school darted away into the shadows instantly, only to reappear when I stepped back. It was definitely a good reflex -- many birds were patrolling the pond verges, hoping to strike.BillTre said:Many animals have an escape reflex that is triggered by increasingly large dark areas in their visual field (like a shadow getting larger as something (a predator) is getting closer.
When I was younger, I would often try to catch fish (with nets) in the wild to keep in aquaria at home. This was very difficult both because they are fast and they quickly respond to seeing and hearing things.strangerep said:I noticed the same thing in a pond near my home. Floods had made the pond much larger, and tiny fish were swimming near the edges. But whenever I tried to get close enough to discern what species they were, the whole school darted away into the shadows instantly, only to reappear when I stepped back. It was definitely a good reflex -- many birds were patrolling the pond verges, hoping to strike.
Imagine you are swimming and see that coming at you!BillTre said:
BillTre said:I had a dog that would chase its tail for quite a while, if I pulled its tail to get it started.
This guys just spins, but in both directions.
Photographer Andy Woo captured the perfect moment of an osprey gliding on the surface of a body of water, an unusual and spectacular photo of the wild raptor.
BillTre said:
DennisN said:I was well aware that cats can be extremely alert, but the snake dodge surprised even me, actually .
the first clip is a startle-escape response. Thing suddenly getting close --> quickly move away.DennisN said:Gosh, that's a cool clip!
I was well aware that cats can be extremely alert, but the snake dodge surprised even me, actually .