Yesterday, 2 people asked me why they have daffodils in places they've never planted them. Stray daffodils show up 20 to 50 feet away from an established clump.
Since rodents find the taste of daffodils offensive, it's hard to imagine a squirrel taking the time and trouble to bury a daffodil bulb.
The next, most likely scenario is that the daffodils reproduce from seed. Yes, this is possible. For us, this method requires 5 years of patience. But the garden has all the patience in the world. The garden has all the time in the world, because in the garden, there is no past or future; there is only the timeless Now. The ever-changing Now.
When we notice this Now ourselves, when we see that the world simply unfolds, we too can abide in the calmness of patience.