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A4

Ecosystem Overview

The A4 ecosystem supports 23 documented wildlife species across 20 taxonomic genera. Located in santa clara county, california, this area provides critical habitat with diverse natural communities. The location hosts 5 frequently observed species and 4 occasionally documented species, creating a balanced ecosystem with both resident and visiting wildlife. While San José nearby has 77% more documented species, A4 offers unique wildlife observation opportunities. This location ranks #28 for species diversity among 96 santa clara county County natural areas, placing it in the 71th percentile for biodiversity.

Biodiversity Highlights

23
Total Species
Documented wildlife species
20
Genus Diversity
Taxonomic genera represented
12
Common Species
Frequently observed species
11
Rare Species
Occasionally documented species
#28
Regional Rank
Out of 96 locations

Species Distribution

Very Common5 species
Common7 species
Occasional7 species
Rare4 species

Regional Context

Regional Ranking
#28 of 96 locations
71th percentile for diversity
vs. San José
-77% species diversity

Most Common Species

Showing 20 most frequently observed species out of 23 total documented species.

Aechmophorus occidentalis

Aechmophorus occidentalis

Western Grebe

Very Common7 obs.
Podiceps nigricollis

Podiceps nigricollis

black-necked grebe

Very Common3 obs.
Sterna forsteri

Sterna forsteri

forster’s tern

Very Common2 obs.
Halictus ligatus

Halictus ligatus

Ligated Furrow Bee

Very Common1 obs.
Lepus californicus

Lepus californicus

Black-tailed Jack Rabbit

Very Common1 obs.
Egretta thula

Egretta thula

Snowy Egret

Common1 obs.
Falco peregrinus

Falco peregrinus

peregrine falcon

Common1 obs.
Larus delawarensis

Larus delawarensis

Ring-billed Gull

Common1 obs.
Gavia immer

Gavia immer

great northern loon

Common1 obs.
Aechmophorus clarkii

Aechmophorus clarkii

Clark's Grebe

Common1 obs.
Podiceps auritus

Podiceps auritus

horned grebe

Common1 obs.
Podilymbus podiceps

Podilymbus podiceps

Pied-billed grebe

Occasional1 obs.
Euphagus cyanocephalus

Euphagus cyanocephalus

Brewer's blackbird

Occasional1 obs.
Petrochelidon pyrrhonota

Petrochelidon pyrrhonota

Cliff Swallow

Occasional1 obs.
Aythya marila

Aythya marila

greater scaup

Occasional1 obs.
Oxyura jamaicensis

Oxyura jamaicensis

Ruddy Duck

Occasional1 obs.
Bucephala clangula

Bucephala clangula

common goldeneye

Occasional1 obs.
Bagrada hilaris

Bagrada hilaris

Rare1 obs.
Himantopus mexicanus

Himantopus mexicanus

Black-necked Stilt

Rare1 obs.
Pelecanus erythrorhynchos

Pelecanus erythrorhynchos

American White Pelican

Rare1 obs.

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No comparable locations found in this region.

Nearby Wildlife Areas in Santa Clara County

Discover 8 other wildlife-rich locations near A4. Each offers unique biodiversity and wildlife viewing opportunities.

Regional Wildlife Network

These nearby locations complement A4within Santa Clara County's wildlife network. Species counts reflect documented observations and help identify the most biodiverse areas for your nature explorations.

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