Rainforest birds and other wildlife, video


This March 2020 video says about itself:

(4K) Breathtaking Colorful Birds of the Rainforest – 1 Hour Wildlife Nature Film + Jungle Sounds in UHD

A new video that bird lovers and cats will equally love, “Birds of the Rainforest” presents viewers with a stunning mix of birds and other wildlife from the rainforests of the world, paired with the relaxing sounds of birds – no music. A collaboration between Nature Relaxation Films and collaborator John of Light, it’s a great way to see the wonders of the rainforest from the comfort of your home. Viewers will enjoy Macaws, Parrots, Toucans, Hummingbirds, and many other exotic species – even some cute lizards, insects and flowers.

Monk parakeets’ social networks, new research


This 2012 video is called Monk Parakeets In The Wild – (Myiopsitta monachus).

From the University of Cincinnati in the USA:

Twitter fight: Birds use social networks to pick opponents wisely

Biologists are studying dominance hierarchies in monk parakeets

June 9, 2020

Summary: Researchers say animals such as monk parakeets seem to understand where they fit in a dominance hierarchy and pick their fights accordingly. This high-level social information helps animals improve or maintain their status.

Knowing when to fight and when to flee is a big part of many animal societies, including our own.

University of Cincinnati biologist Elizabeth Hobson says some animals make the call based on a sophisticated understanding of social standing and their place in it.

“We have a phrase: Choose your battles wisely. Animals do that. People do that,” said Hobson, an assistant professor in UC’s College of Arts and Sciences.

In a new article published in the journal Current Opinion in Psychology, Hobson says animals such as monk parakeets seem to understand where they fit in a dominance hierarchy and pick their fights accordingly. This high-level social information helps animals improve or maintain their status.

Dominance hierarchies are common social organizations in nature. They’re found in everything from hermit crabs to human society, Hobson said.

“Understanding how information is perceived, processed and used by individuals in hierarchical systems is critical to understanding how animals make aggression decisions because different types of information can underlie different kinds of aggression strategies,” she said in the article.

The most basic understanding comes from firsthand experience.

“The low-information case is when animals only perceive and remember things that happened to them. A good example of this is if you are beaten in a fight. You remember that you lost but not to whom you lost,” she said.

Biologists say these battles can have a lasting impact on the combatants called winner effects and loser effects. Winners are more likely to be aggressive in future conflicts while losers are less likely to meet aggression with aggression or pick a new fight.

“With a strong loser effect, if you got beaten, you’re less likely to fight again in the future,” Hobson said.

Other animals might remember losing to a particular foe and be less inclined to challenge that foe in the future.

“What if you don’t just remember the outcome but you remember who beat you? You can build on that,” she said. “Going forward, you’ll be less aggressive with the individual who beat you. It’s a different social dynamic.”

But some animals can make judgments not just through their own direct interactions but by observing other animals and making inferences about where those would-be opponents stand in the hierarchy.

This ability, known as transitive inference, goes like this: If animal A beats animal B and animal B beats animal C, you know animal A can beat animal C. It’s a logical conclusion some animals seem to understand, Hobson said.

“Maybe they never have to fight C or they’ll know they can beat C,” she said.

Hobson is putting her ideas to the test with captive parakeets.

“This paper is setting up a perspective I want to push in my research program. It will be an exciting time,” Hobson said.

North American extinct Carolina parakeets


This 9 March 2020 video from the USA says about itself:

When you picture a parrot, you probably don’t picture Denver, but up until about a century ago, the United States was home to its very own species of parrot: the Carolina parakeet. What happened to this endemic bird?

Hosted by Michael Aranda.

Kea parrot intelligence, new research


This 3 March 2020 video says about itself:

The parrots that understand probabilities

Kea, a type of parrot from New Zealand, have been surprising scientists with their smart predictions. Researchers set them a series of intelligence tests based around probabilities and social cues. They found that kea can perform better than monkeys, showing abilities only previously seen in great apes such as humans and chimpanzees.

Read the paper here.

Macaws help South American trees


This 5 March 2020 video says about itself:

Macaws help plant trees across their habitats

Hyacinth and Lear’s macaws are two endangered parrot species in South America. These birds have strong beaks that allow them to crack through nuts. And a recent study found that the birds are able to help plant trees over hundreds of meters.

But researchers say there could be major ecological concerns if conservation efforts don’t preserve the two species.

African grey parrots help each other


This 2008 video says about itself:

African Grey Parrots in the Wild

Grey Parrots (Psittacus erythacus) foraging and flying in Cameroon, Africa. To help save wild grey parrots, please support us by clicking on the DONATE button and learn more about what we’re doing for these birds here.

From ScienceDaily:

African grey parrots spontaneously ‘lend a wing’

January 9, 2020

People and other great apes are known for their willingness to help others in need, even strangers. Now, researchers reporting in Current Biology on January 9 have shown for the first time that some birds — and specifically African grey parrots — are similarly helpful.

“We found that African grey parrots voluntarily and spontaneously help familiar parrots to achieve a goal, without obvious immediate benefit to themselves,” says study co-author Désirée Brucks of the Max Planck Institute for Ornithology, Germany.

Parrots and crows are known for having large brains relative to the size of their bodies and problem-solving skills to match. For that reason, they are sometimes considered to be “feathered apes”, explain Brucks and study co-author Auguste von Bayern.

However, earlier studies showed that, despite their impressive social intelligence, crows don’t help other crows. In their new study, Brucks and von Bayern wondered: what about parrots?

To find out, they enlisted several African grey parrots and blue-headed macaws. Both parrot species were eager to trade tokens with an experimenter for a nut treat. But, their findings show, only the African grey parrots were willing to transfer a token to a neighbor parrot, allowing the other individual to earn a nut reward.

“Remarkably, African grey parrots were intrinsically motivated to help others, even if the other individual was not their friend, so they behaved very ‘prosocially'”, von Bayern says. “It surprised us that 7 out of 8 African grey parrots provided their partner with tokens spontaneously — in their very first trial — thus without having experienced the social setting of this task before and without knowing that they would be tested in the other role later on. Therefore, the parrots provided help without gaining any immediate benefits and seemingly without expecting reciprocation in return.”

Importantly, she notes, the African grey parrots appeared to understand when their help was needed. When they could see the other parrot had an opportunity for exchange, they’d pass a token over. Otherwise, they wouldn’t.

The parrots would help out whether the other individual was their “friend” or not, she adds. But, their relationship to the other individual did have some influence. When the parrot in need of help was a “friend”, the helper transferred even more tokens.

The researchers suggest the difference between African greys and blue-headed macaws may relate to differences in their social organization in the wild. Despite those species differences, the findings show that helping behavior is not limited to humans and great apes but evolved independently also in birds.

It remains to be seen how widespread helping is across the 393 different parrot species and what factors may have led to its evolution. The researchers say that further studies are required to investigate the underlying mechanisms of the parrots’ helping behavior. For instance, how do parrots tell when one of their peers needs help? And, what motivates them to respond?