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By Catherine Watson

REMEMBER the eastern koel with the infuriating mating call? (Sounds like trouble, Dec 9 2024) Well it clearly worked because koel babies are popping up everywhere.
 
The adult koels are notoriously hard to spot but Liane Arno managed to locate and photograph “the varmint” in her Wonthaggi garden back in November. Now she’s done it again by spotting and photographing a junior varmint after hearing an unusual call in her garden.
 
Though it took her some time to put the pieces of the jigsaw together. She writes: “I thought it was an immature wattlebird because that’s who’s been feeding it!  It must be the varmint.  Look at the size difference!”

​Frank Schooneveldt warned us back when our first story appeared: “The Eastern koel likes to lay its eggs in Red Wattlebird nests.”
And from the Australian Museum: A single egg is laid in the host's nest and once hatched the chick forces the other eggs and hatchlings out of the nest. When the chick leaves the nest it roosts in the outer branches of a tree, cheeping incessantly while the significantly smaller parents desperately search for sufficient food to satisfy the nagging youngster.
 
Not often you feel sorry for the raucous wattlebirds but here they are raising these big fat imposter bludgers loudly demanding “More! More! More!” from dawn to dusk. (Why don’t they recognise the imposter, given it’s nearly twice their size?)
 
The Australian Museum also reports that during breeding season, the koels are found “south to about Nowra, although occasional birds are encountered further south”.
 
The information needs updating as they have clearly decided Bass Coast suits them just fine, according to Post readers who reported hearing the male koel’s call from Inverloch to Phillip Island and all places inbetween. We now have our own koel population, born and bred in Bass Coast. And, like human offspring, they will insist on coming back for the summer holidays every year.
 
In a couple of months koels are supposed to head north to spend the winter in more tropical climes: northern Australia, New Guinea and Indonesia. Which raises some interesting questions. Given that the young koels have been raised by wattlebirds and have had nothing to do with other koels, how will they know when to leave and how to get to New Guinea? 

​Birdoes, please ... 
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"More! More! More!" A voracious young eastern koel. Photo: Liane Arno

4 Comments

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Frank W Schooneveldt - 1 year ago
The adult Eastern Koel eats native and cultivated fruits. The male Eastern Koel hangs around to show the fledgling Eastern Koel the best fruit trees to eat. I imagine when it’s time to return to New Guinea the male Eastern Koel shows the fledgling Eastern Koel the way home or perhaps it’s by instinct.
There are a lot of Red Wattlebirds in the Bass Coast and hence lots of their nests. The Red Wattlebirds speckled eggs are very similar in size, shape and colour to the Eastern Koel eggs, only about 1 mm difference hence the poor Red Wattlebirds are easily duped.
Obviously the Eastern Koel is successfully breeding in the Bass Coast so therefore we expect to see a lot more of them or until the Red Wattlebirds can spot the difference in the egg size.




John Fowler - 1 year ago
I first heard a Koell in Inverloch during the last drought so maybe they came south in search of food
Moragh - 1 year ago
Oooh, I'm feeling really uncomfortable with the anthropomorphic descriptions of the Koel in this and previous article. Koel is a native species, responding to changes in climate, which we humans are responsible for. How is it that we are blaming a bird that is simply responding to circumstance? It is one of many parasitic and semi-parasitic species (animals, plants and other) that make up the biodiversity that we love and depend upon. Please stop demonising the Koel and tap into your curiosity about this and other similar species, of which we have many that live around us all the time.
Noel Maud - 1 year ago
Hi Moragh,
I suppose there was some anthropomorphising but it seemed quite lighthearted and humorous not at all anti koel. I feel certain we are seeing more north to south movement as things warm. A challenge for all of us will be to recognise that this is a natural thing and critters and plants have been doing it for millions of years as the planet goes through its numerous climate changes.