The biggest bird I ever hit was a sea eagle on short finals to Masirah Island in Oman in an Argosy. It had a wing span of somewhere near 2 metres. It went through the D-box of the starboard wing leading edge right back to the spar.
It took several days to fix the aeroplane but the awful thing was sitting there with a cold beer watching the partner soaring around the island looking for his wife. I was told that sea eagles were monogamous and paired up for life. How could I tell him that I didn't mean to hit the love of his life?
Tragic.