looks like twin ducklings hatching
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If the duckling opened up a hole then don't be too quick to assist, since doing so too soon can be dangerous. However, picking away a bit of the shell around the beak will let you better tell what is happening in the egg while allowing the duckling to still get out on its own.
I hope this helps you if you do need to assist it: http://www.backyardchickens.com/t/1075785/assisted-hatching
Best of luck! And if it is twins, I'd love to see a picture! Twin birds are very rare.
- Home in WY
I'd love to see a picture of the egg and whatever pops out.
Welcome to BYC and the coop! There's a lot of great peeps here! Feel free to ask lots of questions. But most of all, make yourself at home. I'm so glad you decided to joined the BYC family. I look forward to seeing you around BYC. Wow! How cool! Good luck with him.