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The Crow That Remembers a Face

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A person walking under a tree may see only an ordinary crow. The crow, however, may recognise that person’s face. Researchers at the University of Washington have studied American crows to find out how experiences affect their responses to people.

In one experiment, researchers wore one mask while capturing the birds and a different mask while feeding and caring for them over the following weeks. Both masks had neutral expressions. This helped the researchers distinguish a response to an angry-looking face from a response learned through experience.

The two faces were later associated with different patterns of activity in the birds’ brains. Scans helped researchers examine these responses. Separate field studies also found that wild crows could recognise a mask associated with capture long after the original event.

It is tempting to call this a human-style grudge: lasting anger towards someone who has treated you badly. That makes a memorable headline, but the observations do not establish that a crow experiences a grudge exactly as a person does. The evidence supports learned recognition and different responses to faces. It leaves room for questions about how the birds experience those memories.

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Źródła i zdjęcie

Tekst dla uczących się angielskiego, oparty na poniższych źródłach.

Ostatnia weryfikacja: 2026-10-12

Zdjęcie: CEKeech · CC0 · Zmieniony rozmiar; miniatura wykadrowana.

Sprawdź zrozumienie

1. Why was it useful for both masks to have neutral expressions? It allowed the researchers to use the same mask in both situations. It reduced the chance that an angry-looking expression explained the response. It prevented the crows from telling the two faces apart.

2. Which conclusion is supported by the experiments described? The crows responded according to whether the masks looked angry or friendly. The crows forgot the capture once people began feeding them. The crows associated different faces with different experiences.

3. What is the author’s purpose in discussing a “human-style grudge”? To distinguish evidence of learned recognition from a claim about the crow’s inner experience To argue that brain scans are less reliable than observations of wild birds To suggest that the birds’ responses were too brief to count as lasting memories

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The Crow That Remembers a Face

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