214 BIRDS OF THE DISTRICT OF GEELONG 
true that the basal halves of six, at least, of the tail- 
feathers in the present species are coloured rufous- 
chestnut (the other bird's tail is uniform), which one 
might think would show distinctly against the general 
bronze-green plumage, with the bird in flight, but 
I have never been able to get close enough to see it. 
Of this I feel certain, that, when studied carefully, 
the notes will be found to be distinct, and so afford a 
ready clue to identity, at least in the breeding-season. 
But one has to know which bird it is before attributing 
a particular call to either species. 
Apart from the tail, the chief differences (these 
only to be seen on close cabinet inspection) are that 
this bird has a thinner bill and longitudinal streaks 
down the throat, besides having a lighter brown 
head and paler-coloured back. The Bronze Cuckoo 
has transverse bars on the throat and a stouter bill. 
The general colouring of each species on the upper 
surface is a dark green with the most beautiful bronzy 
sheen imaginable, the under surface being more or 
less transversely barred. 
There is a limited migratory movement with both 
species, but, like that of the Fan-tailed Cuckoo, it is 
irregular, and I should say that very few of the birds 
went north of the Divide, as one can see them about 
Geelong at almost any time of the year. 
The call is a cheery single note, loud and full, 
uttered most often from the topmost branch of some 
high, dead tree. In flight both these Cuckoos 
exhibit an undulating, almost Swallowy motion. 
