I'm not sure what's going on with the genital area here, but since there's some lateral swelling of the sclerites, I'm thinking male.
Male, as indicated by gonopods on the 7th segment. I'll try to upload clearer pics when I get a better camera.
Approx 13 mm in length
In a koi pond
This feral bird has lived in my dad's neighborhood for years. He hates it.
A pair of finches today. Hopefully with more ID'able marks.
Update: given the pale stripes on the head, I'm calling these Purple finches: http://www.pbase.com/rcm1840/purple_finch_vs_house_finch
Seen during a volunteer habitat restoration event.