Who would make a home from these things? Can you guess before tonight's Unsprung?
Mystery home-building ingredient 1
Mystery home-building ingredient 2
Mystery home-building ingredient 3
Mystery home-building ingredient 4
Get the answer at 8.30pm on BBC Two. We'll also post it on this blog after the show. Good luck!
UPDATE: And here's your answers.
1. Doormouse nest - made of honeysuckle bark
2. Mason bee - in a shell plugged with ground up vegitation
3. Hermit crab homes - including wall plugs!
4. Goldcrest nest - made of animal hair, moss, spider webs (or indeed a long tailed tit or firecrest)
