We also did two control tests. This was because we weren't able to draw any conclusions about the parrots' underlying motivation to help each other from the experiment. They could, for example, be playing or trying to bring the tokens closer to the human hand. In one control, the parrots...
England. What should have been a few fun months of isolation from humans turned into a school of cussing like a human. Yes, these African Grey's taught each other how to swear. Of course, when the staff members ofLincolnshire Wildlife Parkheard the parrots use the "naughty" ...
(begin) the next part of the experiment to test if theparrots would share.Two parrots were put in clear plastic cages(笼子) nextto each other, with an open window between the two cages.There was a feeding window in 5 cages.Then the feeding window was closed for one of theparrots, who...
Then two African grey parrots were put in clear cages next to each other, with a joining window between the two cages. There was a feeding window in both cages so the scientists could give walnuts to the African grey parrots. After that, one of the African grey parrots was given ten ...
(代币)” for food.When the parrots gave these tokens back to the scientists, the parrots were given a walnut(核桃).Then two parrots were put in clear cages next to each other, with a joining window between the two cages.There was a feeding window in both cages so the scientists could ...
Then two parrots were put in clear cages next to each other, with a joining window between the two cages. There was a feeding window in both cages, so the scientists could give walnuts to the parrots. Then one of the parrots was given ten tokens, but it couldn't exchange for walnuts ...
Then two parrots were put in clear cages next to each other, with a joining window between the two cages. There was a feeding window in both cages so the scientists could give walnuts to the parrots. ...
After this, the scientists began to test if(是否)the parrots would share.Two parrots were put separately in clear plastic cages(笼子) next to each other. There was an open window between the two cages and a feeding window in both cages.Then the feeding window was closed for one of the ...
You'll find out how to choose the right pet for your family and how to car for them,including feeding. grooming and training. You'll also find out about the history of pets, their behavior(行为) and the different ways t...
However, experience has made me calmer and each baby has taught me how to be better at raising chicks. I now understand when to reduce hand-feedings and when to stop that last hand-feeding altogether. I am no longer frantic about baby birds taking their first flight; in fact I look ...