Absolute scenes from the nest, as the chicks start wandering about the box. The ensuing chaos is a good chance to get a view of all 9 chicks at once.

One week on from hatching, the chicks are rapidly increasing in size and are sprouting feathers. They are also starting to open their eyes. See if you can spot which ones are starting to exercise their peepers.

Woo! 9 Beaks! I've been counting them since they started hatching, and only ever counted a maximum of 8 until today. There's actually 9 in there!

The beaks are very much enthusiasts of the "waste not want not" principle. Young chicks' digestive systems don't get up to full speed for a few days, and during that time, their poo contains a lot of undigested nutrients. It's daft to let them go to waste, so here we see Mrs. B. scoffing it down. I mean, it makes sense, but yuck nonetheless.

Mr. and Mrs. B. are both feeding the chicks now. If the food is too big to swallow, they take it out again and try another mouth or chew it a bit more.

It must be tiring breaking out of your shell, so it's not surprising that the wrigglers just want to sleep, despite Mrs. B. shouting at them. She gets some food down them later.

When you have blasted out your body weight in eggs (blue tit: 11g, egg: 1.1g), you need to get some of those nutrients back, and the egg shell is great for calcium. Get those shells down you, Mrs. B.

WRIGGLERS! We have pink wrigglers - two of them as of writing. Probably more now - they all come out at about the same time, which is impressive given that they are laid over the course of more than a week. Here's hoping for lots more to come.

Hey! I've got grub! Why is no-one taking my lovely green grub? Mr. B. is disconcerted by the lack of enthusiasm from the unhatched eggs.

Hopefully signs of things to come - Mr. B. brings in a huge green caterpillar for Mrs. B. These are what the chicks will need to grow up big and strong.

9 EGGS! Apparently blue tits can lay up to 12 eggs, but Mrs. B's 9th egg sets a new record for this box. Go Mrs. B!

Is this Mrs. B laying an egg? I can't see anything popping out, but she hops up on to the side of the nest cup, and just stands there with her bum over the nest. Is she waiting for an egg to come out? The next time we see in the nest there are 5 eggs.

EGG! Some time between 6.18am and 6.43am (or possibly 6.23am) she laid her first egg. Well done Mrs. B! In the last bit, Mr. B. comes in, looks a bit lost, spots the egg and does a hilarious double take, before flying off at top speed.

Mrs. B. spent the night in the nest for the first time, fluffed up and with her head tucked under her wing. It won't be long until we see some eggs!

Puttin the finishing touches to the nest. She is now bringing in fluffier material for the nest cup, and has changed the flapping to form a nice shaped place to lay her eggs.

The nest building starts in earnest. Mrs. B spends all morning bringing in lovely springy moss for the underlay of the nest.

Mr. B. is bringing in food, which Mrs. B. happily takes while she is cleaning out the box. She has started digging the schmutz out of the drainage holes now.

The box has quite a lot of poo from last year's nest on the floor. Mrs. B. is clearing it out, but she also seems to be just chucking a lot of it around. A technique I have yet to try myself, when cleaning the house.

Mrs. B brings in some nesting material and chucks it on the floor before doing that flapping thing.

Mrs. B practices the flapping she'll be doing when making the nest. The technique involves bringing in some stuff and then flapping to spread it around.

Mr. B. does a typical bloke's attempt at cleaning - picking up a couple of bits of dirt before getting bored and leaving.

Mrs. B. comes and has a look at the mess on the floor, before hopping up to the door and giving it a damn good pecking. This is quite common with blue tits, and no-one really knows why they do it.

Starling attack! Listen to the starling (maybe) scrabbling around on the box. Look to the left of the screen and you can see a long pointy beak coming in. The blue tits avoided the nest for a week after this - maybe it put them off?

The first recorded visits of the year. Just a quick hop in and out to get a feel for the place. They will keep coming in with increasing regularity until the nest building starts, and it's all systems go!