California Trees and Plants
Birds of California
Wildlife
Outdoor Skills and Leave No Trace
California Natural History
100

This oak species dominates the foothills of the Sacramento Valley and is known for its blue-green leaves.

What is the blue oak? 

100

This woodpecker is known for storing thousands of acorns in granary trees.

What is the acorn woodpecker?

100

Deer grow these every year and shed them each winter.

What are antlers?

100

Of the seven Leave No Trace principles, this one advises hikers to avoid widening trails around muddy sections.

What is Travel and Camp on Durable Surfaces?

100

This fault marks the boundary between the Pacific and North American tectonic plates.

What is the San Andreas Fault?  

200

This tree, common along California rivers and creeks, often has smooth white bark and heart-shaped leaves that tremble in the wind.

What is the Fremont cottonwood?

200

This hawk is often identified by the rusty-colored tail visible in flight.

What is the red-tailed hawk?

200

This cat leaves round tracks with no claw marks because its claws remain retracted.

What is a mountain lion?

200

If thunder follows lightning in less than 30 seconds, you should immediately do this.

What is seek shelter?

200

What mountain range stretches over 400 miles along California's eastern edge?

What is the Sierra Nevada?

300

This native shrub, often one of the first plants to return after wildfire, has bright red bark and small evergreen leaves.

What is manzanita?

300

This black-and-white wading bird has made a remarkable comeback in California after nearly disappearing due to pesticide use.

What is the peregrine falcon?

300

These rodents build dams that create wetlands benefiting hundreds of other species.

What are beavers?

300

When crossing a stream, hikers should generally unbuckle this piece of gear in case they fall.

What is the waist belt of a backpack?

300

California's highest and lowest points, both less than 100 miles apart.

What are Mount Whitney and Death Valley?

400

Unlike most conifers, this California tree sheds its needles every fall.

What is the western larch?

400

This scavenger relies primarily on its sense of smell, unlike most birds of prey.

What is the turkey vulture?

400

North America's only native marsupial belongs to this species.

What is the Virginia opossum?

400

This navigation tool can determine your location without batteries.

What is a compass?

400

This rare habitat, covering less than 1% of California, supports hundreds of plant species found nowhere else.

What are vernal pools?

500

Oaks in California can be identified by examining these structures, which often vary by species more than the leaves.

What are acorns?

500

This jay species is notorious for caching thousands of acorns each year, helping oak forests regenerate.

What is the California scrub-jay?

500

This endangered scavenger has one of the largest wingspans of any North American bird.

What is the California condor?

500

The pointed tip of the "V" on a map feature always points in what direction of a stream?

What is upstream? 

500

This phenomenon, common along California's coast, brings cold, nutrient-rich water to the ocean surface, supporting abundant marine life.

What is coastal upwelling?

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