Regarding numbers (up or down) of White-bellied Sea-Eagles on the NSW
Central Coast and whereabouts, on a recent trip up the Hawkesbury River,
5 - 7 May from Brooklyn to Peat's restaurant and beyond, I saw a pair at
Brooklyn, a pair with 2 juveniles opposite Milsons Island and another
pair further up river not far from Borowra.
Perhaps there is an excellent source of prey in the river and the air -
certainly quite a few Silver Gulls around and there were many people
A basic rule in ecology is that the prey controls the predator, not the
predator the prey.
In other words: Much prey - good time for the predator.Shortage of prey - bad
time for the predator.
If predators would control their prey, this cycle wouldn't work.
Unfortunately there are exceptions; certain species in man-made or
man-influenced habitat and - of course - man itself...
In other words again: There are White-bellied Sea-eagles around as long as
there is abundance of its prey. It is not the White-bellied Sea-eagles who
reduce their prey - it is us!
I hope the real ecologists out there are not going to punish me for this very
From: patrick appleton<>
Sent: Monday, June 25, 2012 4:57 PM
Subject: [Birding-Aus] RE- SEA EAGLE CATCHING SEAGULL IN MID AIR
When Sea Eagles snatch up swan cygnets I momentarily hate them and threaten to
cancel my subscription to Sea Eagle Cam but I had no idea they'd feed on
So why then, are there so few Sea Eagles and an abundance of Gulls????
The Black Swan Communal Nesting Site at Paynesville, (Gippsland Lakes) has its
first occupants for this season with 3 nests occupied. At nest #1 both mum&
dad were in the water today and I saw a white (???????) seabird swoop down and
steal an egg and started eating the yellow contents in about 6 inches of water by
the lake edge. Dad came by and after having a taste of the contents himself,
washed the contents out of the egg shell and threw it into deeper water.
Obviously my first question is, What is the name of the white seabird that
looks like a plain seagull on steroids, (about twice the size) like a dwarf
Also, why do black swans leave their nests to chastise harmless juvenile swans
yet pay no attention to egg stealing preditors ???
Is it an experience thing? I notice the other two nests are never left unattended.
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