never before last walkabout had i specifically sought the camas seed, and so one revelation for me rooting around that field was that the camas pods & seeds make a most unusual and remarkable sound when disturbed. i may have heard it before in the field but never knew the cause, and would not have associated the sound with camas even this time save it was camas seed i sought & it was camas seed i found. the sound is bright, high pitched, almost like a quick & short whistle or a little scream. i took no video camera so no recording, but i may yet have another chance before all is knocked down. once these 3-cavity pods open, the seeds just set loose in them until they get tipped & out they spill...with a little scream.