I don't have experience with incubating them other than by the parent macaws. I do have experience with macaws though. Incubation is 28 days. 3 months to fledge. Hand feeding baby Macaws is not recommended for a novice. They are difficult, and a more problematic bird to hand-feed from an early age. They are also somewhat more difficult to wean. A clutch is usually 1 to 3 eggs.
It's best to have the parents feed them for the first couple weeks but that won't work for those that come out of an incubator. To that end, I can offer you this.
I often shudder at the thought of someone hatching Scarlets.
They are strikingly beautiful, intelligent, inquisitive and have excellent memories. Habits, both good and bad, are very difficult to change.
But in my experience, hatching and feeding hatchlings is only the beginning of your problems. Fertile eggs are cheap but properly housing and feeding one is expensive. They need a huge cage and an even larger playpen. Appropriately sized cages run approximately $2,000.
They're loud and if you have close neighbors or live in an apartment, you'll get complaints.
Are you prepared to give the bird at least 3 hours of exercise outside its cage, every day - for the rest of your life?
Are you prepared to interact with the bird for long stretches petting, cuddling, preening, every day - for the rest of your life?
Are you prepared to wash the food and water dishes every day, wash the perches, toys and floor every week - for the rest of your life?
Are you prepared to completely hose down the aviary every year - for the rest of your life?
I don't think anyone can live long enough and be committed enough to properly care for a Scarlet. It may be a different story if humans lived to be 200 years old but we don't. Macaws mate for life so if you only have one I hope you realize that you will be their lifelong mate. They will become so attached to you that if you have to give it up, you are messing that bird up. If you have to go away for any length of time, like college, military service or an extended job, you won't think it is the same bird. It will hate you for abandoning it for the rest of its life. Then they will outlive you, then they'll likely outlive your children. Even if you are committed to caring for them the rest of your life, after you're gone, your beloved pet will become despondent, angry and miserable the rest of its life.
My best advice is STOP THINKING ABOUT IT.
If you must have a macaw, get one that only lives 20 years.
I worked in the tropics at a Scarlet and Great Green breeding and rearing facility preparing birds for release into the wild. It took at least 10 years to get them to the point of release.
We had at least 200 of each species. About a third of those were breeding pairs.
Most were rescues from hotels, makeshift zoos and people's pets who could no longer care for them. Most of those that had been pets had severe anxiety. Some were extremely human aggressive. Trust me, you don't want one to attack you. You will lose. We had a breeding pair that were 90 years old. We had one that was so psychotic it was completely bald except for its head because it continuously plucked itself. I've seen the aftermath many times over of birds that should never have been considered as a pet in the first place.
Below is a released macaw flying along the ocean. That is how they were meant to live.
Edited by ChickenCanoe - 10/29/15 at 4:33am