“Among aviculturalists, there is a school of thought that parrots, pigeons and doves are related. Though parrots have hooked billed weapons of mass destruction and doves have soft beaks, all of them are generally vegetarian. A characteristic that they have in common that distinguishes them from most other bird families is that parrots, pigeons and doves have powder down feathers. Hold any one of them and you will find a coating of fine dust on your hands.
“And, finally, all parrots, pigeons and doves feed their babies on ‘crop milk’ – a secretion created by sloughing off the lining of the crop.
“Sun Chong Hong recently posted a video of a Pink-necked Green-pigeon (Treron vernans) regurgitating crop milk for a youngster LINK.
“Below are photos of a Red-Breasted Parakeet (Psittacula alexandri) doing the same.
“During the recent fruiting season, a flock of them regularly visited my neighbour’s rambutan tree in Seletar. The parent bird is on the left.
“The parent now feeds the well-grown youngster with crop milk as well as regurgitated fruit.
“Like Oliver Twist, the hungry youngster continues to ask; ‘Can I have more?’
“Red-Breasted Parakeets are not native to Singapore, but due to their former abundance in the bird trade, are probably the commonest Psittacine on this island today. Occupying the same ecological niche, they have effectively displaced the native Long-Tailed Parakeet (Psittacula longicauda), which I hardly ever see in the wild now.
“There are several races. The ancestors of the birds in the photo, which have red beaks, probably originated from Indonesia. Those from India have varying amounts of black on the beaks. However, all the sub-species interbreed freely, so it is difficult to say if the birds in Singapore are pure-bred representatives of any particular race.
“Unlike other Psittacula species, which tend to be very prominently sexually dimorphic, it is not easy to distinguish the sexes of Red-Breasted Parakeets. In the Indonesian race, the red (or pink) breast of the female is less pronounced than that of the male. But the differences are subtle, and you will need to have two birds side by side to make a comparison.
“Among the Psittacula species, I have kept and bred longicauda, (Long-tailed) rosaceus (Blossom-headed) and krameri (Ring-necked). In my opinion, parakeets of this genus generally do not make good pets. They are more suitable as display birds in aviaries.
“Unlike lorikeets, cockatoos, love-birds and other parrots, Psittacula do not form strong pair bonds. Consequently, they do not bond strongly with humans. Though they can be tamed if obtained young, frequent and continued interaction is necessary. They revert to wildness if left alone for a while.
“As for wild-caught adult birds, they seldom, if ever, become really tame. And most of them (except rosaceus) have screams that are unexpectedly ear-shattering for such small birds. They also bite savagely.
“It would not be surprising if many disappointed purchasers of Psittacula parakeets turned them loose. They breed freely. And that is how the huge feral flocks in Singapore became established.”
Lee Chiu San
22nd September 2014