I've been hearing cicadas singing in residential neighborhood non-native trees the late morning to afternoon for the last few weeks: late May to early June.
One type of record of wildlife record tracked extensively by the rock climbing community is nesting sites of protected bird species and associated area closures by land managers.
While not a research grade observation, this still contributes a record of a professionally vetted (by wildlife specialists at this California State Park, in this case) observation of the nesting species.
This is for this spring's closure of parts of Auburn Quarry's upper canyons to protect nesting peregrine falcons.
The first woodpecker I've seen in this neighborhood, though I've heard them many times.
Dicot with clusters of four-petaled yellow flowers growing on top. Green leaves are very narrow, growing in opposite pairs spaced well apart. Stem is reddish with a sparse pale hairs. Habitat is an unwooded west-facing rocky slope near the top of a hill, in the middle elevations of the northern Sierra Nevada. Neighboring plants were huckleberry oak and pine mat manzanita.
An optimistic ant
A diurnal moth
My first sighting of a mountain hare (as opposed to cottontail) was next to Strawberry Lodge.
Dicot with single white five-petalled flower and toothy edged leaves of three. Grew in a creek side habitat, and on shady north facing slopes.
Four white, pale purple veined, petals on the clustered flowers of this dicot. Leaves are smooth edged, entire I believe is the botanical term? Grew in a creek side habitat, and on shady north facing slopes.
Insect pollinating manzanita
A all black, medium sized, ant wandering along tree bark
A more complex fronded fern
Another gang of beetles, eight on this flower (another invasive dandelion or sow thistle?). Spring is in the air!
Beetle, the larger of two species (assumed) seen on the same dogwood flower.
Rather small beetle. Around 2 of this species were observed on the center of a mountain dogwood flower.
Beetle 1. Solo. Flower occupied is an invasive sunflower family member, maybe dandelion or sow thistle?
Insect den? Never saw its inhabitant
Hymenopteran on manzanita
Bombus on manzanita
Giant chain fern
Polyporales? Growing on a living conifer
Wolf lichen on California incense cedar bark