If you're in a situation where maneuvering abruptly at Va is your means to best assure a safe exit from the situation, you're way past safe anyway. If the notion is to fly around at Va, so at any moment, you could apply full control input to maneuver around a sudden surprise, well, that's technically correct, but way beyond good airmanship!
The following accident involving the inflight break up of a 210 discusses the possibility of the pilot applying excessive aileron whilst above Va to avoid birds. They discounted the possibly, but couldn't rule it out. Wedge Tail Eagles are common, weighing in up to 13 pounds, 9 foot wing span, soaring to 6,000 and higher, and reluctant to get out of your way, done much dodging myself. The pilot had suffered minor facial injuries from a previous bird strike.
https://www.atsb.gov.au/media/577600...-103_final.pdf
Risks abound whatever you do.