noisy visitors in a neglected garden

The other morning a large flock consisting possibly of thousands of Little Corellas came to town.  Here's what they sounded like ...

After about half an hour they moved on. The birds who call the garden home drifted back and reclaimed their territory.  The frantic, harsh, raspy cacophony was replaced by more familiar peaceful birdsong ...

The Little Corellas were perched high in the plane tree in the street overlooking the garden, where they appeared to be eating leaves and seeds.

Little Corella badly photographed by me.
Sepia effect helps image to stand out a bit better. 

Little Corella from website Birds in Backyards

Here are some interesting facts about these birds ...

1. Their scientific name, Cacatua sanguinea, means 'Blood-stained Cockatoo' and refers to the dark pink marking between the eye and the bill.
2. They are widespread throughout Australia, and their range is increasing due to land clearing and increased water sources. (They like to graze on the ground).
3. They pair for life. Both sexes incubate the eggs and both care for the young chicks, that hatch naked and are initially totally dependent on their parents.
4. Their numbers are secure, with no threat of extinction. In some agricultural areas they may be considered pests.

Information from Birds in Backyards

My garden is starting to show the signs of my inability to tend to its needs.

The birdbath has creatures breeding and living in it. While fascinating to look at, I don't think they are particularly desirable: mosquito larvae.

It has been quite hot and not much rain. Some  plants are struggling, drooping and asking for water. This is unprecedented and is happening because the soil has not been cared for. No rich dark crumbly soil covered with a cosy blanket of mulch. Just grey dry earth, exposed to the elements, inhospitable to worms and all the tiny creatures that live in healthy soil.

I normally try not to interfere with cycles of insect life in the garden. But when I saw some eggs on a leaf on the Eucalytus leucoxylon that a couple of years ago had been decimated by caterpillars I decided to pick it.  If anyone out there knows what kind of eggs they are, and why some are cream and some are blue, I would be interested to know.