There is a ton of ways to get one of these good balls on fjordur for example

1: get any flyer locate a nest lead them away go bag and take the egg

2: lead something really strong to them and let it kill them and then just take the egg while they are fighting

3: get a fjordhawk run into a nest pick up the egg die and when you respawn the fjordhawk brings your items back including the egg

4: run up to the nest while having nothing pick up the egg jump off a cliff respawn and go get the egg from your body make sure you die when you fall

5: find a nest lead the adults away from the nest bola them and go get the egg

It's easy as that I hope this helped

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