If you can't find a local chicken keeper, you might consider training up a teenager and paying them pocket money when you're away. I'm lucky that I have a friend three doors away who keeps chickens, with a 15-year-old daughter who looks after mine when we go away. She's reliable and sensible, and I pay her £15 for a week's care, with a small bonus if I find everything clean and tidy and the birds happy when I get back - which so far she has always earned. In her case, she does have her knowledgeable father as backup if a problem occurs, but I give her my mobile number and email address so she can contact me if she needs - she never has. Before a holiday I go through with her exactly what I want her to do, and when, and where everything is kept, plus vets contact details, in writing. She likes the chickens and says that being trusted to look after them is good for her CV! If you think this might be OK, you could start by asking neighbours if they knew of anyone who might be happy to help - you might get adult help this way, lots of people are interested in chickens and would actually enjoy trying out keeping them before taking the plunge themselves. For adults, eggs during your holiday, plus a good bottle or two of wine on your return, always goes down well. Actually, I got back into chickens a few years ago, after a long break, by volunteering to look after my friend's birds when he went away, I realised how much I had missed having them around.