Cuckoos are unpopular with other birds. They have a habit of sneaking into other birds houses, chucking out the kids and depositing cuckoo children in their place. The unwilling surrogate parents find themselves feeding a voracious cuckoo child, at great personal expense.
You would think the surrogate parents would realise that the cuckoo child wasn’t theirs, but it doesn’t work that way. Any egg that hatches in their nest is their child. It is hard-wired in birds.
They have their revenge though – bird species that are often host parents of cuckoo children bear a grudge against any and every cuckoo they see. As a result cuckoos are unpopular with other birds. Adult cuckoos are often harassed by the birds they parasitise. Read about one study on this behaviour conducted near Melbourne.
This might be why cuckoos have a tendency to sit still in a tree, well hidden. They don’t fly around making themselves noticeable. The Channel-billed Cuckoo is a perfect example.
We must have walked and driven past dozens of these enormous birds in the Top End before seeing the first one properly. Read about how excited we were to see the first one properly here. Seriously, they are 58-65cm long from beak to tail!
Every year around August they fly over from Indonesia and Papua New Guinea. They hit the Northern Territory and Queensland Top End first, then over November and December end up as far south as Sydney and even East Gippsland, Victoria and the suburbs of Melbourne. Read more about them here.
They come to breed, and to do that they stop being unobtrusive. Their loud and wonderful calls ring out through the sub-tropical forests they love. Visit this page to listen.
The Top End has other lovely cuckoos too – including the huge and gorgeous Pheasant Coucal that seems to prefer running around on the ground to flying.
Their call is magnificent – something like a troupe of monkeys crossed with water dripping into a resonant drum. Listen here on Birdlife Australia Unlike other cuckoos, the Pheasant Coucal does build its own nest and raise its own children.
We also see, when we’re lucky, the tiny Little Bronze-cuckoo. This bird has a soothing, cicada-like hum that makes you think of summer and lazy afternoons. Listen and see great pictures on Graeme Chapman’s site.
The 6 day Wild Top End wildlife tour runs every August – which we think is the best time to be there. Its not too hot, most of the migrant birds have arrived, and its dry enough to get into the great places to see these Top End cuckoos and other wonderful birds.
Janine Duffy, Wildlife Guide.