I'm interested in knowing what drone it was, it would need to be a pretty expensive drone to cover the range needed to enter the airspace. Your typical £30 drone from Argos is unlikely to fly 100ft let alone several thousand feet to disrupt air travel. With the increase from 1km to 5km for the air port exclusion zone, it would need to be a £1000+ drone at the very least.
My mavic 2 (2lbs) would manage it (8km range, limited to 5km in the UK) and that cost £1300 with a 30 minute flight time, my other drones a £30 (~170g) mess about drone that gets blown about in a slight breeze and can just about manage 300ft distance and maybe 100ft up. My final drone is my 4S FPV (~£200 and ~450g) which can cover about 1km range very quickly but then its battery will be dead in 2-3 minutes anyway
The thing is bird strikes happen daily in the air and nothing ever really happens, wanna know what a 30lb goose does to a jet liner when struck at altitude. Nothing. Besides a bloody mess all over the air craft.
There is a possibility that a bird could enter the engine and shut that engine down, but then jet lines are able to fly with an engine out anyway.
There are a millions of bird strikes a year. Never see that plastered all over the media.