Even though you are not giving them anything besides their chick crumble. They may eat the bedding in brooder or anything else they may get their little beaks on and get impacted, that's why most give grit right away. Always better to be safe than sorry. Thought I seen you post another thread...
Navel looks ok. Hopefully it's just really week from hatching and needs some time. But with having to assist hatch there may be reasons it didn't hatch on its own, time will tell. Good luck :thumbsup
Can't really tell from pic but there looks to be more exposed than just yolk sac. Doesn't look promising at all sorry to see your hatchling looking like that.
It takes 5 or 6 days for incubation of cocci so if they are only about 4 or 5 days old it's not cocci. Looks heat related to me. Also, some brooder plates are only recommended for ambient temps above 50 degrees.
Brooder plates work like a hen by touching the warm plate. The chicks need to be able to come in contact with plate with their backs. Best to put plates on an angle low in back higher in front so they can find a comfortable heat range for themselves. Sounds like a heat problem as they can't get...
Congrats glad to hear you have had a good first hatch. Only time I would hatch upright and not laying on its side, is if it had a bad/dethatched air cell. And I wouldn't leave turner like that in incubator during hatch, as it's too easy for hatchlings to get hurt. Gaps holes too many things for...
With your hen trying to cover that many eggs it usually doesn't turn out well. You should only ever let them sit on as many eggs as your hen can cover easily. With too many the eggs on outside are not getting incubated. As hen moves turns eggs those unincubated eggs get moved under her and those...
What are your nighttime temps at 7 weeks old they could be outside already. Is their coop ready I would have them in that already. No such thing as too big only too small. :D
I usually have good luck with all different aged poults in brooder together most of the time with my large barn brooder with plenty of room. As long as the youngest is a week old and getting around good. And as @R2elk stated have had many try to mother younger, but sometimes you will get a very...
I have had young unsexed less dominate/aggressive males not crow or show foam if there are other very dominate/aggressive males in same pen/group. They seemed too submissive or maybe bulled to come into sexual maturity.
Those will be domestic geese and will not fly and migrate like wild Canadians. Would not be a good idea to add domestic geese to the wild. Besides being illegal to mess with the wild waterfowl. If you want to help, contact local wildlife service and let them know that's all you are legally able...