A Two-violist fly-out

Two prominent New York City violists happened to be in attendance at last night's West Drive Screech-owl fly-out: Jean Dane, an owlwatching regular, a composer and a top-level NYC freelancer and Dawn Hannay, a violist with the New York Philharmonic since 1979. Is there some secret pheromone mysteriously emitted by Otus asio that attracts lower-register-stringed instrument-players?

PS Fly-out was at 6:05.