It should not surprise us to
discover that emotions and instinctual responses are shared by other species
rather generally. Obvious intelligence
certainly matters, but the choice of famously clever birds obviates any risk
there.
This behavior has been well
observed in animals in close proximately to ourselves.
In the event it is all derived
from eons of selective choices that promoted species success of which we are
the inheritors.
Birds hold 'funerals' for dead
By Matt WalkerEditor, BBC Nature
1 September 2012 Last updated at 02:27
Some birds, it seems, hold funerals for their dead.
When western scrub jays encounter a dead bird, they call out to one
another and stop foraging.
The jays then often fly down to the dead body and gather around it,
scientists have discovered.
The behaviour may have evolved to warn other birds of nearby danger,
report researchers in California ,
who have published the findings in the journal Animal Behaviour.
The revelation comes from a study by Teresa Iglesias and colleagues at
the University of California , Davis ,
US .
They conducted experiments, placing a series of objects into
residential back yards and observing how western scrub jays in the area
reacted.
The objects included different coloured pieces of wood, dead jays, as
well as mounted, stuffed jays and great horned owls, simulating the presence of
live jays and predators.
Alarming reaction
The jays reacted indifferently to the wooden objects.
But when they spied a dead bird, they started making alarm calls,
warning others long distances away.
The jays then gathered around the dead body, forming large cacophonous
aggregations. The calls they made, known as "zeeps",
"scolds" and "zeep-scolds", encouraged new jays to attend
to the dead.
The jays also stopped foraging for food, a change in behaviour that
lasted for over a day.
When the birds were fooled into thinking a predator had arrived, by
being exposed to a mounted owl, they also gathered together and made a series
of alarm calls.
They also swooped down at the supposed predator, to scare it off. But
the jays never swooped at the body of a dead bird.
The birds also occasionally mobbed the stuffed jays; a behaviour they
are known to do in the wild when they attack competitors or sick birds.
The fact that the jays didn't react to the wooden objects shows that it
is not the novelty of a dead bird appearing that triggers the reaction.
The results show that "without witnessing the struggle and
manner of death", the researchers write, the jays see the presence of a
dead bird as information to be publicly shared, just as they do the presence of
a predator.
Spreading the message that a dead bird is in the area helps safeguard
other birds, alerting them to danger, and lowering their risk from whatever
killed the original bird in the first place, the researchers say.
Other animals are known to take notice of their dead.
Giraffes and elephants, for example, have been recorded loitering
around the body of a recently deceased close relative, raising the idea that
animals have a mental concept of death, and may even mourn those that have
passed.
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