Sydney Sea-Eagles - Nest

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EagleCAM is a BirdLife Australia, Southern NSW, Research Project.

For information about EagleCAM visit the BirdLife Australia EagleCAM website. 

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                                                     Click on an image to see a larger view

NestThere has been a Sea-Eagle nest in the Newington Armory woodlands for many years with a succession of Sea-Eagle pairs renovating the nest in the breeding season. Historic observations go back to at least 1991. The early records are incomplete, but eagles have been observed in the woodland or fishing along the Parramatta River for many years. Both juvenile and adult Sea-Eagles have been seen in the area.

nestThe original nest, over the twenty years of observations had reached a massive size of about 2.5 metres (8 feet) diameter and about 1.5 metres (5 feet) thick. Its construction was of small branches, sticks and twigs some upto 2.5 metres (8 feet) long. Lined with eucalyptus leaves, and from observations, the leaves appeared to come from the same type of eucalyptus tree. The eagles start to build or renovate their nest in early May. Most of the building materials (branches, sticks and wigs) are gathered by the male. The arranging of these materials are done by both the female and the male but the female has the ultimate say in the design. It would appear that the female has control of the nest. The leaves are predominantly gathered by the female but not exclusively with the male occasionally delivering a bundle of leaves.

female & eaglet on nestThe nest from the High-Definition camera showing the female and one of the eaglets after fledging on their favourite roost tree with the nest 7 metres away (23 feet) in the background, this is just prior to the nest tree falling down in February 2011.

 

 

 

In February 2011 after a long, dry, hot period, the nest tree of 20 years had a catastrophic failure fracturing the main trunk and bringing the nest crashing to the ground.

snapped branchfallen nest fallen nest

 

nest plan In May 2011 the eagles built a new nest in the same tree. The new position was about a 1.5 metres (5 ft) lower than the old nest. It was about 2.5 metres (8 ft) below the original camera position of 2010.

The diagram shows the nest & its relationship to the height of the trees around.

 

nest & cameraThe nest in September 2011 showing the camera and the female eagle standing guard above the nest. The nest tree is a Scribblie Gum (Eucalyptus racemosa).

 

   

   

 

 

nest planIn May 2012 the eagles built yet another new nest in a different tree about 75 metres (82 yards) east from the 2011 nest tree. This nest is about 20 metres (65 ft) from the ground. The cameras are in a different tree about 20 metres (65 ft) from the nest.

This diagram shows the new nest of 2012 and its relationship to the height of the trees around.

 

 

  Nest 15 May 2012 Nest from below Nest 17 June 2012
              15 May 2012                         15 May 2012                         17 June 2012
The nest tree is a Blackbutt (Eucalyptus pilularis).

 

nest planIn April 2013 the eagles started to renovate the 2012 nest. Raising the nest bowl about 200 mm.
This diagram shows the nest 2013 and it's relationship to the height of the trees around and the camera positions.