Please stop likening drones to birds.
Birds:
Light, squidgy and mostly feathers. When they impact the airframe they usually just go "splat!" They rarely cause any damage. We hit them regularly. I fly about 800 shorthaul hours per year and report bird strikes on average twice per. Most recently were five sparrows on departure from Athens. Most spectacular was a pigeon directly into the centre of the FO's windshield. If they hit a pitot tube then it's a bit more serious, as the gore can block the tube and cause our airspeed indicators to fail.
Most birds ingested into modern turbofans cause no damage whatsoever. Eighty-plus percent of the air flowing through the fan is bypass flow. The fan on the front is simply a glorified propellor. Only about a fifth of the air actually goes through the core. The soft bird is minced by the whirling knife blades of the fan and spat out in the cold, bypass flow. Only in the unlikely event of a small or medium sized bird going through core of the engine is damage or failure likely.
Large birds through the engine are a slightly different matter as their weight can damage the carefully balanced fan, bending blades and leading to rapid failure. I witnessed a heron go through a (Monarch?) 757 motor at Manchester a few years ago. The resulting sheet of flame as it disintegrated was terrifying.
Most birds, however, have some level of intelligence. Certainly more than those individuals presently flying drones within a few hundred meters of airports. When they see a larger bird, their first reaction is to avoid it and avoid becoming lunch. Again, larger birds have less fear. We regularly see swans crossing Heathrow at low level. But that's why airports employ bird scarers.
Drones:
Any drone hitting the fuselage, wings or empennage will cause damage. The heavier the drone, the greater the damage. Any drone going through the fan will destroy the engine.
We have legislation that makes it illegal to operate any flying device within a certain distance and height from an aerodrome. A few, professional drone operators undertake the proper training and respect the law. But the great majority neither know nor care about said laws. When a large and heavy drone can be purchased for a couple of hundred pounds or dollars by the same individuals who twenty years ago bought minimoto bikes to ride on residential streets and roads, do you really think you'll be able to persuade them to operate them with care and caution and within the law?