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Birds Perched, Birds Flying, Birds Aground

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Bedrock Of The Community
United States
15607 Posts
Posted 01/13/2021   09:59 am  Show Profile Bookmark this reply Add KuoLC5310 to your friends list  Get a Link to this Reply
Namibia
Wetland Birds
June 28, 1999
The stamp set depicts Grus carunculatus, Pterocles burchelli, Glareola nuchalis, Pelecanus onocrotalus.
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Bedrock Of The Community
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Australia
30764 Posts
Posted 01/14/2021   08:55 am  Show Profile Bookmark this reply Add rod222 to your friends list  Get a Link to this Reply
Sc#3922 2013 60c 40 Spotted Pardalote. Pardalotus Quadragintus.
One of Australia's rarest birds.
...and such a beautiful fellow.

The birds deliberately clip the leaf stalks of the manna-gum tree, a species of eucalyptus, with their bills. In many cases the tree responds to the wounds by exuding sticky and nutritious manna gum over the next few days, which the birds harvest. Biologists call this foraging behaviour "mining" or "farming".

"Mining for tree exudates is an unusual foraging behaviour among birds," says Case. "This is the first record of an Australian bird that mines trees."
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Edited by rod222 - 01/14/2021 09:03 am
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