The chough breeding season is going well here at Paradise Park. So far we have only lost one chick this year. The second chick in nest three died just after hatching – giving an indication of what a traumatic experience breaking out of an egg can be.
We now have three nests with two siblings and one with a solo chick. This gives the parent birds every chance to rear the youngsters, while we closely monitor weight gains and general health. If a chick falls behind, we can give it a boost with supplementary feeding and medication where necessary.
However, the youngsters have kept us on our toes. The larger chick in nest five suddenly started “stargazing” – it’s head folded almost flat over its back. Very worrying. We gave it a course of antibiotics, along with gapeworm treatment and vitamin supplements. The head stayed in the same postion for two days, with the parent birds somehow managing to feed it. Then overnight, the head returned to normal position, much to our amazement.
We had a further scare when the younger chick in nest two had one eye closed, and did not open it even when being handled or fed. Once again, a course of antibiotics soon had it back to normal.
Most the chicks are now above 200 grams in weight, and it is at this point that we stop taking regular weights. One practical reason for this is that the chicks are beginning to get highly mobile, and when put back in the nest start climbing around.
Another reason is that their feet are now fully developed, and have unbelievably clinging claws. Sometimes trying to get the birds out of the nest can mean pulling some of the nest material out along with the chick, resulting in potential damage to the nest or chick.
We have noticed that the nests this year seem to be less robust than normal – possibly as a result of the birds being put into the aviaries at a late date (due to bird flu movement restrictions).
This is the first year we have seen the chicks sitting on the floor of the nestboxes, on the wood of the box itself. This could lead to the chicks having splayed or deformed feet.
The solution – the Trump Toupee! Once the birds were large enough, we slipped a coir mat underneath, giving them something to grip on to. (We did not do this when they were too small, as there was a risk of the parents pulling the whole thing out – along with the chicks.