Lear 45 Captain reported a suspected bird strike shortly after takeoff. The crew returned to the departure airport for inspection where significant damage to the aircraft was observed.

Narrative

I was the Pilot in Command of Aircraft X on a Part 91 IFR flight from ZZZ to ZZZ1. We had 2 Passengers onboard. At approximately XA:40; we suspected we had a bird strike on the nose of the aircraft after takeoff at approximately 500-800 feet AGL. All engine indications were normal; and no vibration was felt. We did notice a foul smell in the cockpit and cabin. We continued the climb to troubleshoot the issue and discuss our options to continue to ZZZ1 or air return back to ZZZ. We ultimately decided to return to ZZZ to have our Director Of Maintenance do an inspection of the aircraft. We briefed our Passengers of our issue and advised them we would be returning to ZZZ. We contacted ZZZ Center with our intentions to return and to advise them we would need some vectors to burn off some fuel to get below our max landing weight. We landed safely about 1 hour after the suspected bird strike. The ground inspection revealed ingestion of birds in the left engine. There was not a visual sign of any bird ingestion on the right engine. Bird strikes could also be seen on the left windshield; the right nose below the right windshield; and the left pitot tube. Our Director of Maintenance; continued with troubleshooting and called the airplane down for further inspection.