Great horned owl pellets collected under willows on 22 may 23 at Fortin Reservoir: Rattus 4 Rattler: 1 squirrel 4 Oryzomys 3 Phyllotis 3 Akodon longi 1 May 24 Morning cloudy, no frost. Ran trapset 8:30; three small-eared Eligmodontia and 2 akodons? loncho? Went out to INTA and worked with Jorge Araya, Susan Martin, and Javier Vellati. They had collections from INVAP, from Sos Meneor, which is said to be transitional to monte habitat, and from Sierra Grande (which I think was collected by someone else), no surprises at INVAP; Sos Meneor had numerous Phyllotis and (all in frustellidae) an akodon that may be micratus. Sierra Grande had groupys, a big square-edged akodon, and a big (30-g) colomys?? Will attract some shulder. They also turned over to me their Eligmo dissection notes for a joint paper. A botanist at INTA identified the soft-needle rush from Conello as Scirpus subulatus. The other 2 genera are the green-leaved S. bracteolatus and the gray/white leaved S. neayi. at 5:30 put out effort 56 M15 in the same grid of habitat as yesterday at km 44 (roadside). Christo and Marcelo came by at 8:30 and returned since they had been photographing. Afternoon, colon.