Hi Del and Birding-ausers,
   
  Quite a few years ago at Port Macquarie I saw a
  male koel feeding what looked like a berry to an immature koel, I was never
  sure whether it was feeding a young bird or courting a female in immature
  plumage.
   
  Several times over the years I have seen immature
  and adult cuckoos together. Koels and Shining Bronze Cuckoos are two that
  come to mind. I am sure there is some kind of a bond
  there.
   
  In the early 1990's I saw a male and female koel
  apparently supervising Red Wattlebirds feeding two koel young, one of these
  young was beginning to get black (male) adult plumage.
   
  I am sure we still have a lot to learn about our
  birds. 
   
  Bruce Cox. 
  
  In many years of observing I have not noted any
  ineraction between the larger cuckoos with immatures although I ve come
  accross records in literature. At Gracemere near Rockhampton Q. in late May
  1994 I located a pair of Blue-faced Honeyeaters were rearing a young
  Koel. This is the latest that I had seen a cuckoo being fostered.
      In February 2002 in riverside
  vegetation beside the Daintree an adult Gould's Bronze-cuckoo had an
  immature in tow and feed it with insects on two occassions as we
  watched. The young bird was begging and there was no sign of any foster
  parents. This proves that they have some form of parenting instinct at 
  least.
   
  Regards,
   
  Del. Richards, Fine Feather Tours, Mossman,
  NQ.