Harvester ants out compete the invasive Argentinian ants in the very dry grasslands at Jasper Ridge. Note all the chaff outside the colony.
Close up, the deep red at the center bowl of the flowers becomes apparent. The reserve has three different observed species of Clarkia: C rubicunda, C unguiculata , and C purpurea. C unguiculata's shape is distinctive and is NOT a cup as these, and C purpurea is paler at the center.
Both C. venustus & C. argillosus are known in the preserve.
Big Squirreltail Grass
Also known as rosin weed. Observed in serpentine grassland.
Observed in very dry serpentine grassland where harvester ants thrive, out-competing Argentinian ants.
Non-native grass, much taller and growing in a less diversified community than the nearby areas with serpentine soils.
Chaparral woody plants small
A probably juvenile cormorant. Double-crested are most common at the lake. Was hanging around the field station yesterday in a way that suggested it was habituated to humans. Or maybe sick. Not around today so hopefully it joined the others at the lake.
right in the creek bottom
my first bloom of the season.
Eastern shoreline. 2 males, 2 females
On the edge of chaparral along the fire road. Heard before seen
Tracks in a sandy area just above the willows. Noted at least a dozen or more tracks.
Low hanging oak branch with nesting site low to the ground. I shook the branch and the woodrat came scampering out into the lower branches and froze, hoping I couldn't see it.
first of the season. Unusually dry for this time of year. last big rain was December of 2012, a year ago. Less than 4" since then.
We were up in the sandstone rock area, first finding a scrape from several days before and then this recent mass of scat at the base of a Mimulus plant. About the size of both my hands together; very fresh and damp but not steaming. Likely from early that morning. Should have touched it to test for warmth, since I had no thermometer. Photos: Dan Quinn