Australian Ravens love roadside picnics. They don't bother with baskets and blankets, preferring to drop the food down to the road and there dig into the alfresco antipesto. Ant nests are torn down and ripped apart.
But top of the wish list lately seems to be leaf spiders' nests, much harder to find being rarely more than three dangling leaves stuck together. Young spiders don't look very filling. And may make a run for it once the leaves are pulled apart. The ravens - all in final stages of nest prep - hunt for every last one.
And by the look of it in the Common this morning get grumpy when the food runs out.