Avian Expert Articles

Inside Dr. Pepperberg’s Lab: Parrots & People—Relationships Built on Trust

African grey
Being prey animals, companion parrots are hardwired to be on the lookout for outdoor predators.

Parrots are prey animals—in the wild, they must always be on guard against numerous predators. Obviously, each species has its own specific vulnerabilities, depending on where it lives, but whether the predator is a hawk, an owl, or a carnivorous cat, sentinel behavior is a way of life, and something that seems to be innate. Alex, for example, was domestically bred, had never been in the wild, and yet was so completely spooked when he noticed a tiny screech owl on the porch of my house—constantly repeating “Wanna go back,” even after it was hidden from view—that we had to abruptly end one of his few sojourns from the lab (Pepperberg, 2008). He was frightened but, thankfully, trusted me to get him to what he perceived would be safety.

Birds living in captivity are completely dependent upon their humans, and unless they can fully trust their human caretakers, they will not form a solid bond with them. These birds must trust that their humans will provide an appropriate diet and fresh clean water on a daily basis, because they cannot forage on their own. If they find themselves hungry or thirsty, as far as they are concerned, that trust has been broken.

They are dependent on their humans to provide activities and companionship; in the wild they spend their days foraging, bathing, and always interacting with other birds (in both friendly and aggressive ways), birds with whom they trade watch-periods, sharing the chore of acting as sentinels against predators. If they are left alone for long periods, they then must themselves constantly be on alert to keep safe from predators, and will likely have less trust that their human companions will “have their back.”

With An Eye to the Outside

Although most birds I know enjoy ‘sunning’ themselves in front of a window, they also are very aware of outdoor predators (see a previous blog on hawks); they thus must trust their humans not to place their cages directly against a window. And if the cages are positioned that way for enrichment or because no other options exist, it is important that they can trust their humans to draw shades or cover their cages at night to provide security so that they can rest peacefully. Some parrots are happiest if a towel covers a small portion of the cage at all times to give them a sanctuary area.

I find it interesting that Griffin—and Alex before him—seems to wait to do much of his preening until I or certain students come into lab; I think it is because he recognizes whom he can trust to keep watch so he can concentrate on his feathers. I think that is also why I’ve found that students must spend many weeks caring for the birds, doing mundane chores, before the birds will do any experimental trials for them: While involved in a task, the birds can’t take their attention away from the experiment to watch out for their own safety, and have to trust that the students will keep them protected; that trust is built while the students learn to care for the parrots’ needs.

And although my birds can talk to me in English and express many of their desires, it also appears that they—and likely many pet birds—understand more than they can express vocally. One of my students noticed that, in situations in which Griffin didn’t want to climb or was being aggressive because he thought something he didn’t like was going to happen (e.g., she was trying to get him to climb off his cage near to the time when he usually got a shower or his medications, etc.), if she specifically told him she was not going to do shower/meds/etc…he  would pause, tilt his head, and then lift up his foot and deign to climb.

The same student had a similar experience with Athena, who loves to crack open almonds but sometimes ends up with a beak-resistant nut: The student would offer to retrieve and open those nuts for Athena, but it took several tries before Athena understood that the student wasn’t trying to steal the nut, but rather was trying to be of assistance… Eventually, if Athena was struggling and the student held out her hand and said “Can I help?” Athena would drop the nut onto the human palm and wait patiently to get it back.

Trust Goes Both Ways

And, of course, the need for trust works both ways. For example, if Griffin really doesn’t want to climb, he gives me a gentle nip (something Athena is slowly learning)—his way of saying “No”—and I have to trust that he has a good reason for his behavior. It often turns out that it is something like his needing to finish eating or getting a drink before being willing to engage in some other activity.

It is very clear that humans must take the time to understand the basic reasons for the behavior patterns of our avian companions. If we do so, we can be rewarded with a very special bond.


Pepperberg, I.M. (2008). Alex & Me. New York: Harper-Collins

3 thoughts on “Inside Dr. Pepperberg’s Lab: Parrots & People—Relationships Built on Trust

  1. This was such an interesting and enlightening article. Very Helpful. It makes more sense now to understand certain behaviors; the why’s behind the behaviors!
    I think this will help me to give my little GC conure companion a happier life. I am pleased to know that my not putting her near the window was actually good for her.

    Thank you so much.
    Ps, I saw Dr. Pepperberg in Rochester, NY, many years ago, and that gave me such an interest in birds. ❤😊

  2. My grey, also domestically bred, panicked when I once wore leopard print slippers. I forgot that, it was awhile ago and then I started wearing leopard print pajamas and he started grunting and was scared. I had to tell him it was ok and now he is fine with it. He also is much more comfortable with a sheet covering his cage at all times. When I adopted him, his previous owner told me he liked that. Even though he now trusts me he wants the security of the cover. Now if I can only get him to stop shrieking when I don’t feed him fast enough or leave the room. Thanks Dr. Pepperberg.

  3. I have a female Galah Cockatoo. She’s almost 15 years old. She came from a clutch of 3. All were hens. Her sisters attacked her and almost killed her. I saw her prior to the attack. We sort of picked each other that day. When I went back to purchase her I couldn’t find her. Her breeder said she’s down there. She was over to the edge of the cage trying to get my attention. From that day forward we belonged to each other. I can’t get her to talk. I’ve taught parakeets and Eclectus to talk I just can’t get this one to talk. I’m with her 99% of the time. Once in a while she will say “That’s good or OK”. That’s the extent of the vocabulary she shares. She’s plucking breast feathers. I wish I could get her to stop before it goes any further. I loved Dr. Pepperberg’s book. Every bird owner should read it.

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