Hi Birders
recycled article from the BBC website. I don't know if the same
would be true for Australia.
http://news.bbc.co.uk/earth/hi/earth_news/newsid_9458000/9458906.stm
Cuckoos have evolved plumage patterns that give them a
hawk-like appearance to scare the birds whose nests they invade,
say scientists.
A study has shown that reed warblers - a cuckoo host species -
are less likely to attack more "hawk-like" cuckoos.
This helps the parasitic birds to lay their eggs undisturbed.
The visible similarity between cuckoos and sparrow hawks was
already clear, but this is the first study to show the effect the
trickery has on host birds.
more at link ..
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