bella is an african gray and lives in laurel park zoo on 10 a river in the canary islands she and her friends have been helping the mox plant institute for ornithology with an experiment about social intelligence and cooperative ness. the parents quickly learn that they can exchange a token for food. but in this experiment bella has a problem she can swap her tokens for a treat because the window is closed instead she hands them over to her friend kimmy kimmie then swaps the tokens for food through her window bella gets nothing this generosity without any immediate favor in return surprised even the researchers because until now such behavior had only been observed among some great apes and humans. in the 2nd experiment the parents are given a choice. a blue token means only one of them gets a treat a white token earns them both a snack they soon work it out and choose white which benefits both birds even though the other one has done nothing to earn a treat. me carrots are evidently helpful and not envious. the researchers think this has to do with power which lifelong monogamy. he p

is an african gray and lives in laurel park zoo on 10 a river in the community islands she and her friends have been helping the marks bronx institute for ornithology with an experiment about social intelligence and cooperative ness. the parents quickly learn that they can exchange a token for food. but in this experiment bella has a problem she can't swap her tokens for a treat because the window is closed instead she hands them over to her friend kimmy kimmie then swaps the tokens for food through her window bella gets nothing this generosity without any immediate favor in return surprised even the researchers because until now such behavior had only been observed among some green apes and humans. in the 2nd experiment the parents are given a choice. a blue token means only one of them gets a treat a white token earns them both a snack they soon work it out and choose white which benefits both birds even though the other one has done nothing to earn or treat him. parents are evidently helpful and not envious. the researchers think this has to do with parents live longer now the way. they

is an african gray and lives in laurel park zoo on 10 a river in the community islands she and her friends have been helping the mox branch institute for ornithology with an experiment about social intelligence and cooperativeness. the parents quickly learn that they can exchange a token for food. but in this experiment bella has a problem she can swap her tokens for a treat because the window is closed instead she hands them over to her friend kimmy kimmie then swaps the tokens for food through her window bella gets nothing this generosity without any immediate favor in return surprised even the researchers because until now such behavior had only been observed among some green apes and humans. in the 2nd experiment the parents are given a choice. a blue token means only one of them gets a treat a white token earns them both a snack they soon work it out and choose white which benefits both birds even though the other one has done nothing to earn or treat. me parents are evidently helpful and not envious. the researchers think this has to do with parrots live longer knockabout. they prefe

is an african gray and lives in laurel park zoo on 10 a river in the canary islands she and her friends have been helping the marx plant institute for ornithology with an experiment about social intelligence and cooperativeness. the parents quickly learn that they can exchange a token for food. but in this experiment bella has a problem she can swap or tokens for a treat because the window is closed instead she hands them over to her friend kimmy kimmie then swaps the tokens for food through her window bella gets nothing this generosity without any immediate favor in return surprised even the researchers because until now such behavior had only been observed among some great apes and humans. in the 2nd experiment the parents are given a choice. a blue token means only one of them gets a treat a white token earns them both a snack they soon work it out and choose white which benefits both birds even though the other one has done nothing to earn or treat him. any parents are evidently helpful and not envious. the researchers think this has to do with power it's lifelong monogamy. they pre

is an african gray and in laurel park zoo on 10 a river in the camaro the islands she and her friends have been helping the mox plant institute for ornithology with an experiment about social intelligence and cooperativeness. the parents quickly learn that they can exchange a token for food. but in this experiment bella has a problem she can swap her tokens for a treat because the window is closed instead she hands them over to her friend kimmy kimmie then swaps the tokens for food through her window bella gets nothing this generosity without any immediate favor in return surprised even the researchers because until now such behavior had only been observed among some great apes and humans. in the 2nd experiment the parents are given a choice. a blue token means only one of them gets a treat a white token earns them both a snack they soon work it out and choose white which benefits both birds even though the other one has done nothing to earn a trick. many parents are evidently helpful and not envious. the researchers think this has to do with parent's life number not about. they prefe

is an african gray and lives in laurel park zoo on 10 a river in the canary islands she and her friends have been helping the mox plant institute for ornithology with an experiment about social intelligence and cooperative knows. the parents quickly learn that they can exchange a token for food. but in this experiment bella has a problem she can't swap her tokens for a treat because the window is closed instead she hands them over to her friend kimmy kimmie then swaps the tokens for food through her window bella gets nothing this generosity without any immediate favor in return surprised even the researchers because until now such behavior had only been observed among some green apes and humans. in the 2nd experiment the parents are given a choice. a blue token means only one of them gets a treat a white token earns them both a snack they soon work it out and choose white which benefits both birds even though the other one has done nothing to earn or treat him. me parents are evidently helpful and not envious. the researchers think this has to do with parents' lifelong monogamy. they pr