birding-aus

RE- SEA EAGLE CATCHING SEAGULL IN MID AIR

To: Paul Burcher <>, "" <>
Subject: RE- SEA EAGLE CATCHING SEAGULL IN MID AIR
From: Nikolas Haass <>
Date: Tue, 26 Jun 2012 02:44:12 -0700 (PDT)
It should be nuptial.

Here some of Raja's photos documenting this awesome behaviour:
http://www.adarman.com/Birds/Raptors/Peregrines

Cheers,

Nikolas

 
----------------
Nikolas Haass

Sydney, NSW


________________________________
From: Paul Burcher <>
To:  
Sent: Tuesday, June 26, 2012 3:10 PM
Subject: RE-  SEA EAGLE CATCHING SEAGULL IN MID AIR
 
Penny et al

My wife, Jackie and daughter, Isabel, saw three White-bellied Sea-eagles just 
above the old tollgates at Berowra (between Cowan and Berowra Creeks just south 
of the Hawkesbury) the other day. What was unusual was two of them engaged in a 
downward spiraling talon-locking flight.  Would this be territorial (with the 
third a female) or nuptial? They're seen fairly regularly in the area as are 
Wedge-tailed Eagles, Collared Sparrowhawks, Grey/White Goshawk, Peregrine 
Falcon and the very occasional Little Eagle.

Paul

On 25/06/2012 8:05 PM, PennyDB wrote:
> 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. ===============================
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