Recommendations for Field corn hybrids that offer more protection from Redwing Blackbird damage.

Being a former sweetcorn grower(110 acres average for 40+ years) I know all about Redwing bird damage in corn. Propane cannons, shooting, ballons etc offered little protection. The only thing we found that worked at all was planting varieties with longer/stronger husks that offered more tip coverage. Well, now that I am only growing 1,000 acres of field corn and beans I have had some prettty severe damage in some of my field corn. Just saw last week as much as 100 bu/ac decrease in yield as I moved across the field with the combine. The bird damage also had the added benfit of allowing rain to puddle inside the husks(ears didn't tip over like it should have due to 1/3 of the corn missing off the cob according to my agronomist) and cause up to 19% damage due to mold and sprouting. (We had an exceptionally wet season this year) Any help would be greatly appreciated. Would prefer at least a Round-Up Ready variety if possible. Thank you.