Hi Joyce,
The sparrow doesn't appear to have been seen since the 31st in the morning. Personally, I've tried four times, but I guess now this is a nail in the coffin of this continueing rarity, which is unfortunate. The sparrow area appears to be closed because it's near the shore, however, Boulder Reservoir's website says the main north trail is still open. But on the hopeful side, due to the drainage, there is potential for a large number of shorebirds (which should we visible from the still open trail), maybe even some rarities!
Ben Sampson,
Boulder, CO