A nest reminds you that shelter can require repeated journeys for small materials.

Nothing about a nest happens in one movement. It is hundreds of trips, each carrying almost nothing, and the structure only appears because none of those trips was skipped. Shelter of every kind tends to be built like this, out of contributions too small to feel like progress on the day they are made.

If something you are building feels too slow to be working, count the trips rather than the result. Keeping the small deliveries going is the entire method, and the shape becomes visible much later than it starts forming.