It could be :

https://en.wikipedia.org/wiki/Common_bronzewing

Sorry, this species does not present in Thailand.

It looks like a juvenile emerald dove (Chalcophaps indica indica). Compare with this photo http://www.pbase.com/wongtsushi/image/94706838

Also, the plumage can be vary depending on the sex and subspecies.

It look like Chalcophaps, but C. indica has blue-grey  not chestnut rectrices. Probably is Chalcophaps stephani (young) because of rectrices entirely chestnut with black sub-terminal band. Only a problem: outermost rectrices must be gray in stephani. In the foto look with

I also agree with Sujan Henkanaththegedara. Check the photo of  Chalcophaps indica indica in http://www.graemechapman.com.au/library/viewphotos.php?c=111&pg=2

ok, I agree, see also:

http://orientalbirdimages.org/search.php?Bird_ID=679&Bird_Image_ID=100103&p=11

In HBW  Vol. 4 (Del Hoyo et al. 1997) the  tail of indica is wrongly described as: central tail feathers greyish-balck, outer ones blue-grey with broad black or purplish sub terminal bands (without indication of chestnut as for stephani).

Thanks all for your valuable replies.

Facebook is a better tool for ID'ing birds. There are lots of groups/pages that are specifically devoted to ID'ing birds, which I usually use. I would suggest you use the following link for further bird IDs. 

https://www.facebook.com/groups/BirdIDgroupoftheworld/

When asking for an ID is useful to say where the animal was found, it reduces the possibilities, so it's easier to find out the species. 

But I agree with the preview comments: It's a juvenile Chalcophaps indica indica.

This bird is found in Palampur, Himachal Pradesh, India.

It is a juvenile Emerald Dove - hence the bronzy tips to the body feathers and greater coverts. White bread is not part of their diet. I trust it has already been released into the wild.

 Hi Gireesh,

It really look like a juvenile Emerald Dove, Chalcophaps Indica.

See there to compare (the second picture is an even younger juvenile):

 http://www.shutterstock.com/fr/pic-12487408/stock-photo-emerald-dove-chalcophaps-indica.html?src=6J83RQIxJEyErwKXr66nlQ-1-60

http://orientalbirdimages.org/search.php?Bird_ID=679&Bird_Image_ID=62041&p=59

Best,

AleX

Thanks Dr. Desmond Allen and Alexandre Caron. Actually this baby bird was found at Palampur, HP, India in the evening time. I took it to my home to avoid any predator attack and kept for one night. It was already released at the same place in next morning from where it was found. It took a long flight (~80 meter)  after it release and sat on a tree and made me relaxed.

Emerald dove, Chalcophaps indica is the answer as all other, just in case I searched if there any other doves to confuse on, but it is clear answer upon your location. But suggestions must be on your captive conditions, you may need to exam on food resources  for their young age. As we know, some herbivorous  birds also get fed insect like food by their parents. i.e. Sunbirds (usually feed on flower honey) feed spiders for their juveniles