2 June
Three little birds have survived and appear to be doing well. The parents are still frequently feeding them and very soon they will be leaving the nesting box. The last few days bad weather, along with a lack of food, is perhaps the reason the other baby birds did not survive. The normal survival rate to adulthood is only about one chick per nest per year.
20 May
 A snapshot of the
video footage has shown nine hatchlings. All appear to be thriving.
18 May
Another four baby birds have now appeared in the nest. Both parents are now feeding frequently. The mother often sits on her young to keep them warm. The hatchlings are blind, naked and helpless at this stage.
17 May
Four baby birds have now hatched out! A day or so before hatching, the chick may be able to communicate with the parent by making vocal sounds and responding to the parents' calls.
The chick's bill has a hard tip to the upper mandible called the egg-tooth. While laying on its back, inside the egg, the chick will continually raise its head and push the egg-tooth against the eggshell. As the shell weakens, the chick attempts to straighten itself and so push the two halves apart.
16 May
Incubation is now on the twelfth day and hatching should start very soon. During the last two weeks the male has been defending the area around the nest site from other blue tits, so protecting the available food needed for both adults and, later, the young.
The young hatch at a time when food is at its most abundant. They are fed by both parents, mainly on small caterpillars, and stay in the nest for two or three weeks. The adults also remove the droppings regularly, to keep the nest clean.
5 May
The mother has started incubating the eggs and there are now at least 10 clearly visible, when she occasionally leaves the nest to feed.
The eggs are smooth and glossy and white with purplish-red or reddish-brown spots. They measure about 16 mm by 12 mm.
1 May
Parents are popping in and out of the bird box throughout the day to
check on the eggs and keep them covered.
In the evening they have been spotted spending more time with the eggs.
29 April
Four eggs are now apparent in the nest.
Only one egg is laid early in the morning and then it is covered with feathers to hide it. Incubation will not start until the clutch is complete - that way all the eggs will hatch on the same day and then fledge on the same day.
The mother feeds during the day to get enough food to produce another egg tomorrow.
25 April
The feathers are already appearing – the nesting process has begun. | 
