This chick's wings look quite well developed. Developed enough for them to need flapping exercises!
The great tit chicks are growing up fast.
However, they still have some way to go before they are ready to fly with.
Gustaf is feeding the chicks. Here you can only see 5 of them but the sixth one is still there! He's just at the bottom of the pile at the moment.
These wing feathers are not as well developed as the ones shown above. The main shaft of the feather is there but there is little covering on them yet.
This time it's Greta's turn to feed the chicks,
Here you can see all six gapes asking for food!