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Summary

Crows Hold grudges for years

This is a news story, published by MailOnline, that relates primarily to John Marzluff news.

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avian abuse
MailOnline

MailOnline

•

Crows DO hold a grudge - and birds can stay grumpy for 17 YEARS

MailOnline
Summary
Nutrition label

75% Informative

Study began in 2006 when Professor John Marzluff , an environmental scientist at the University of Washington , put on a scary mask and captured seven crows in a net.

He and his assistants would occasionally wear the mask in subsequent years as they walked around campus feeding the resident crows and recording their reaction.

On one occasion, he was subjected to aggressive 'scolding' caws from 47 out of 53 crows he encountered.

The number of aggressive caws started to fall until no scolding calls were logged at all during one walk in September 2023 - 17 years after the experiment began.

VR Score

73

Informative language

72

Neutral language

8

Article tone

informal

Language

English

Language complexity

44

Offensive language

not offensive

Hate speech

possibly hateful

Attention-grabbing headline

not detected

Known propaganda techniques

not detected

Time-value

short-lived

External references

5

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