Things used to make these videos:

In box Camera - Green Feathers wired IP camera
https://www.green-feathers.co.uk/coll... - Use discount code YOUTUBE10 for 10% off non-discounted Green Feathers products across their website

Nest box - Garden Nature side view box
https://gardenature.co.uk/product/sid...

Streaming software - OBS
FREE to download at https://obsproject.com/download

Editing software - Davinci Resolve 17
FREE to download at https://www.blackmagicdesign.com/prod...

External Camera - Sony A6400 with 18 -105mm F4 lens
Streaming hardware - Apple MacBook Pro 15" 2012 and 2018

Here's a little montage which takes us from an empty nest box to first egg. The British Trust for Ornithology has a BlueTit Diary page which sets out their nesting and breeding habits - https://www.bto.org/understanding-bir... - and states that usually blue tits spend between one and two weeks building their nest. Some even build their nest in only a few days. Our female took between 6 and 7 weeks! Such a perfectionist. It might go some way to explain why this nest was so deep!

BTW As of the 7th June the parents have been spotted still feeding the fledged chicks in the garden.