That is awesome to have so many sweet cameras at your disposal! I am impressed! your chickens are looking so wonderful too!the brownie is my oldest camera, but i also shoot sometimes with my grandfather's Rolleiflex (from the 1930s), and most recently got a Crown Graphic from the '50s. also all of my polaroids & the Hasselblad manual cam are from the '60s.
all the various cams i mess around with are collected here: http://www.flickr.com/photos/lawatt/collections/72157594588133823/
a couple more snaps:
the two cream legbars: speedy, who's 4-5 weeks old & looks like she'll have a small crest, and amelia, who's 7 weeks & no crest
but amelia has a HUGE tail!