BirdLife Australia Southern NSW again this year has started its study of
the WBSE nesting at Sydney Olympic Park. This is our forth year with HD
video cameras recording the full breeding cycle.
Each year we do see the eagles bring young Silver Gulls back to the nest.
This starts when the eagle chicks are about six weeks old, till they fledge
at about twelve to thirteen weeks. It has happened each year, but we have
not seen them catch gulls at other times, not to say that it would not
happen. They appear to like young gull, or they are easer to catch.
To see the live video stream (sorry about the adds) www.ustream.tv/seaeagles
we have only one cam running at the moment but are working on the PTZ and
expect to have it running next week.
This year the eagles have built another new nest which is about 75 meters
from last years nest.
Regards
Geoff Hutchinson
-----------------------------
Message: 6
Date: Mon, 25 Jun 2012 17:27:25 +1030
From: patrick appleton <>
To: <>
Subject: RE- SEA EAGLE CATCHING SEAGULL IN MID AIR
Message-ID: <>
Content-Type: text/plain; charset="iso-8859-1"
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
seagull.
So why then, are there so few Sea Eagles and an abundance of Gulls????
ALSO:
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
Albatross ????
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.
------------------------------
Message: 7
Date: Mon, 25 Jun 2012 17:29:13 +1030
From: patrick appleton <>
To: <>
Subject: FW: RE- SEA EAGLE CATCHING SEAGULL IN MID AIR
Message-ID: <>
Content-Type: text/plain; charset="iso-8859-1"
i'D BETTER ADD MY NAME THIS TIME
From:
To:
Subject: RE- SEA EAGLE CATCHING SEAGULL IN MID AIR
Date: Mon, 25 Jun 2012 17:27:25 +1030
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
seagull.
So why then, are there so few Sea Eagles and an abundance of Gulls????
ALSO:
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
Albatross ????
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.
PAT APPLETON
LAKES ENTRANCE VIC
------------------------------
Message: 8
Date: Mon, 25 Jun 2012 02:27:47 -0700 (PDT)
From: Nikolas Haass <>
To: patrick appleton <>,
"" <>
Subject: RE- SEA EAGLE CATCHING SEAGULL IN MID AIR
Message-ID:
<>
Content-Type: text/plain; charset=iso-8859-1
Patrick,
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 simplified statement!
Cheers,
Nikolas
?
----------------
Nikolas Haass
Sydney, NSW
________________________________
From: patrick appleton <>
To:
Sent: Monday, June 25, 2012 4:57 PM
Subject: 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
seagull.
So why then, are there so few Sea Eagles and an abundance of Gulls????
ALSO:
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
Albatross ????
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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===============================
------------------------------
Message: 9
Date: Mon, 25 Jun 2012 20:05:13 +1000
From: PennyDB <>
To:
Subject: RE- SEA EAGLE CATCHING SEAGULL IN MID AIR
Message-ID: <>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
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
fishing.
> Patrick,
>
> 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 simplified statement!
>
>
> Cheers,
>
> Nikolas
>
>
> ----------------
> Nikolas Haass
>
> Sydney, NSW
>
>
> ________________________________
> From: patrick appleton<>
> To:
> 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 seagull.
> So why then, are there so few Sea Eagles and an abundance of Gulls????
> ALSO:
>
> 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 Albatross ????
> 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.
> ===============================
===============================
To unsubscribe from this mailing list,
send the message:
unsubscribe
(in the body of the message, with no Subject line)
to:
http://birding-aus.org
===============================
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