The bird-brained behaviour of holding a grudge

Cranky corvids and feuding pop stars share something in common.

Sometimes it's just too hard to let it go. Art Garfunkel recently told The Times that he and Paul Simon have put aside their feud. Again. I was at their gig in Melbourne in 2009, four rows from the front. Although Art's voice soared, it faltered on Bridge Over Troubled Water. But it was glorious. Their setlist began with Old Friends, the name of their reunion tour, tragically describing a duo marked by both harmony and discord. 

It's not just old friends who can harbour old grudges. It turns out, according to John Marzluff from the University of Washington, that crows can similarly prolong a grudge for up to 17 years. Putting aside a longstanding grudge can be a good commercial decision, as evidenced by a certain Britpop band recently... but when I heard on the radio the other morning that crows are good at holding grudges, I must admit it made me laugh. There's something about the pettiness, the silliness of human grudges that seem to befit the ridiculousness of a bird. The bird-brained behaviour of holding a grudge may similarly find its root in fear: just as Marzluff has discovered that crows' brains show evidence of human-like fear. 

But grudges, just like fear, are no laughing matter.

Read more on Seen & Unseen.