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canberrabirds
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canberrabirds
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| To: | COG list <> |
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| Subject: | thornbills and cuckoos - some questions |
| From: | Con Boekel <> |
| Date: | Sun, 16 Sep 2007 17:49:58 +1000 |
Today I observed (dy) for two sets of Brown Thornbills and once for a
pair of Striated Thornbills. This raised some questions - are the
thornbills unusually early, and, if so, will the cuckoos miss out?
Another question - what is the competitive advantage for birds to raise
a cuckoo in the nest? Why don't they simply let the cuckoo die?
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