Open Access
Table 1
Description of chick growth in captive breeding facility Research Center for Biology-LIPI
| Age (week) | Description |
|---|---|
| 0 | Just hatched, do not have natal feather, reddish body, yellowish beak, eyelids are still closed |
| 1 | Eyes are still closed, the pin feathers have begun to appear in the spinal, humeral, and femoral parts, even though they are still in the skin. In the abdomen has not been overgrown with feather pins. |
| 2 | Eyes begin to open. Gray-black fine hairs begin to cover the entire body. The beak has color changed to black with the tip of the yellow beak |
| 3 | Soft feathers are getting longer, but the length is different; in the capital and ventral neck looks shorter than other body parts. |
| 4 | The sheath has begun to appear on the alar precisely in the secondary feather, humeral, and capital. Already seen a little bit of feather color that can determine male or female. |
| 5 | The primary feather sheath has begun to appear, and the secondary feather is getting longer. Feather cover at the primary coverts and caudal starts to appear, while median coverts and greater coverts have longer feather covers, and green feathers or red feathers have begun to appear. |
| 6 | Feathers have begun to cover the head, most of the wings, and sheath of the caudal feather is getting longer, and green or red feathers are starting to appear. The back is still covered with natal feathers. |
| 7 | Feather has covered all parts of the wing except humeral parts, head and tail, the spinal part is still covered with natal feathers |
| 8 | Feather has covered most of the body except a little humeral part still covered natal feathers. |
| 9 | The whole body has begun covered with the feather |
| 10 | The black color on the beak starts to disappear and becomes yellowish. Blue primary feathers have begun to long; the chick has begun learning to fly. |
| 11 | Chick can fly by themselves, but sometimes falling. The offspring are always closed to the male parent, and he is still doing allofeeding to their chick. |
| 12 | Ventral feathers on the underside of the wing are still grayish black |
| 15 | Chick had actively flown by themselves and are still learning to eat, characterized by feeding themselves after the male ate |
| 20 | Chick can be separated from the parent |
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.