One more chick died, mother brings nest material

Sadly, another chick has died. That's down from nine to only four chicks in just over 24 hours. And one of the remaining four looks very weak and I fear he is not going to survive either.

I think there is not enough food coming in. Where are the green caterpillars? I thought they were supposed to be the main food. But in the last few days it's been mainly spiders and some things that I don't recognise. It seems to me that in the first days they brought in more nutritious food. But I could be wrong.

I captured something strange on video. You can see three healthy chicks and a dead one in the nest. After the mother comes back to the nest after having been away for about ten minutes, she brings nest material instead of food and it looks like she tries to feed it to the chicks.

Strange behaviour, 6 May 2014 6:36pm

Perhaps I'm reading too much into this but it looks kind of desperate and confused.