The blackbird built the nest from scratch within 3 days time. First day the bird worked hard almost all day around 14 hours in total and then the day 2 and day 3 the bird spend only few hours to finish up the nest. This is a time-lapse video of approximately 4-5 hours of recording.

The nest is located just below the ceiling in a shed at about 2 meters height. The shed has no door so the bird can fly in freely. The bird started using this ledge for nests after I moved one of it's nests up from an inconvenient for me place in the shed. Since that moment it is already a third nest not counting the one I moved up. The video is recorded with a bird box camera.