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The gang-gang cockatoo is one of the species whose bills have been increasing in size as the climate grows hotter. Photograph: William Robinson/Alamy |
According to research, animals are
increasingly “shapeshifting” because of the climate crisis.
As such, warm-blooded animals are physiologically,
getting larger beaks, legs and ears to adapt to a hotter climate and to better
regulate their temperature.
With the differences becoming more pronounced
as the climate warms, when animals overheat, birds use their beaks and mammals
use their ears to disperse the warmth and some creatures in warmer climates
have historically evolved to have larger beaks or ears to get rid of heat more
easily, the Guardian reports.
According to the report, if animals fail to
control their body temperature, they can overheat and die just as beaks, which are not covered by feathers and
therefore not insulated, are a site of significant heat exchange, as are ears,
tails and legs in mammals if not covered by fur.
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The beak of the mulga parrot (Psephotus varius) has been increasing in size. Photograph: Minden Pictures/Alamy |
The review, published in the journal Trends
in Ecology & Evolution, found that the differences are particularly
pronounced in birds, according to the report, as the author of the study, Sara
Ryding of Deakin University, a bird researcher, said: “Shapeshifting does not
mean that animals are coping with climate change and that all is fine.
“It just means they are evolving to survive
it – but we’re not sure what the other ecological consequences of these changes
are, or indeed that all species are capable of changing and surviving.”
While the scientists say it is difficult to
pinpoint climate breakdown as the sole cause of the shapeshifting, it is what
the instances studied have in common across geographical regions and across a
diverse array of species like the Australian parrot that have shown a 4-10%
increase in bill size since 1871, positively correlated with the summer
temperature each year, the report stated further.