On Tuesday the 28th, a transport worker strike took place in the Netherlands. As a consequence, Amsterdam Schiphol airport advised airlines to cancel dozens of flights. Note that this makes them unclaimable, as the cancellation was caused by factors outside the airlines’ control.
On the 25th, an easyJet flight to Ibiza was climbing out of London Stansted when one of the engines ingested a bird. While there were no changes in its performance parameters, the crew decided to land back at Stansted. A replacement plane delivered the passengers to Ibiza with a delay of 6 hours. However, due to the delay being caused by bird strike, this flight is unclaimable.
On the same day, a LOT plane from Warsaw was landing in Tel Aviv when it experienced a bird strike. The plane landed safely, but was not able to depart for the return flight, which was then cancelled.
On the 26th, a Transavia France plane was taking off from Nantes for Rome when the crew stopped the climb due to a fuel leak. They shut down the engine and landed back in Nantes 50 minutes later.