My flight from FRA-CSX was delayed by 6 hours thereby causing my arrival in BKK to be delayed by over 9 hours. At Changsha airport, they provided a document which stated that the delay was due to "airport facilities". I've already contacted the airline with the EU261 complaint form and they've replied that no compensation was due as it was an extraordinary circumstance caused by a bird strike.

Should I turn over my case to a law firm such as EUClaim in order to pursue compensation? Should I press CX further by email as the regulation states that they need to provide proof of the reason? Or should I accept that the reason was out of their control and drop my claim?

They did provide 30 Euros in food vouchers at FRA as well as 2 hours at one of the worst hotels I've visited in Changsha.