The eggs will always hatch in the order they were laid. Usually after 18 days, the first fertile egg to be laid will get hatched and thereafter one egg will hatch every other day. Do not get alarmed if you see the mother pushing the chick to one side of the nestbox. This is done some times by the female parakeet. It is done to facilitate the hatching of the remaining eggs.
With the brisket prepared you need to get the smoker ready. You will want a fire of about 200 degrees F to 230 degrees F (95 degrees C. to 110 degrees C). At this temperature, you can expect the cooking time to be about 1 1/2 hours per pound.
Smoke Temp should be about 225-250. Take it to 165, foil it, take it to 205, pull it, let is rest in a cooler with towels for 30 min to an hour and thats about it. If you do all that, you will have the perfect brisket. Theres no shame it putting it in the oven once you foil it either.