1988 M. Stanback M. Formicivorus Volcan Irazu (16 Mar) ground. Some are split, but most seem to be opened through the side [illegible] and some or all of the meat eaten out From this entrance. Another oak just up the road is currently Flowering. I continued past the Linda Vista (move Acws) to a left turn for the Instituto de Desarrollo Agrario. (Sign next to it is red white r blue Union Irazu (Costa Rica - Canada) I took this dirt road @ 700 m. I found roost trees, but saw no birds. See map for more birds seen. Next sizable (+ accessible) group seen was further on, past the sign that says V. Irazu 9 km. Group here had ≥ 3 on the SE side of the road ≥ 2 on the NW side: 2 groups? I turned around shortly after this, at Km post 24. The habitat gets very good at this point - more trees than open but still both. It's now 1740. There's a "sort of" roost tree - guany? abd? just across the road from post 24. I'll try to get a photo 1400 Back at Bluff. Lone oak (connected to curve oak acorn by wire) has sapsucking holes - some look fresh. There are ≥ 4 birds here now. 1 bird flew into curve oak but was displaced with a growl by another bird 1415 At Ravine, a bird is throwing chips out of hole. 1530 Are those storage holes on the mid hit dead branch on the big spindley tree on the bluff? They look like it, but they don't look in great shape. No interest in them yet, the birds are in the tree. Some chasing here too.