The Mountains Above LA And the Reality of Conservation

Drive north from the Hollywood Hills for ten minutes and the city recedes. The suburbs thin, the canyon roads steepen, and if you know where to look – or if you have left a trail camera at a creek crossing for long enough – you begin to see what shares this landscape with thirteen million people living below. 

Mountain lions, black bears, bobcats, mule deer, golden eagles and foxes: the wildlife community of the Los Angeles mountains is, to many of the city’s residents, a genuine surprise. California holds one of the largest mountain lion populations in the United States, estimated at between three and four thousand individuals, and perhaps two dozen of those range within the greater LA region. Of all major global cities, only Mumbai can claim a comparable number of big cats living within its boundaries.

That number is remarkable given the pressure the landscape is under. What mountain lions in the Santa Monica and San Gabriel Mountains actually occupy is a fragmented network of wild land that is structurally cut off from broader wilderness by the freeway system surrounding it. Multi-lane highways running in every direction create biological walls. Populations that cannot move between patches of habitat cannot exchange genetic material. Researchers studying the mountain lion populations of the Santa Monica Mountains found that the animals were not merely struggling to cross the road. They were, as the science showed, genetically collapsing toward a point of inbreeding themselves out of existence. The mathematics of fragmentation play out slowly, but without deliberate intervention the process does not reverse.

Against this backdrop, some of the most detailed evidence for what is actually happening in these mountains has come not from government agencies but from individuals who chose to look closely. Robert Martinez, a part-time photographer, has spent more than a decade placing trail cameras across remote canyons in the Angeles National Forest – canyons he takes care never to identify by name, to protect the animals whose movements he documents. What his cameras have recorded is an ecosystem in active use: mountain lions moving through ridgelines at dusk, bears raising cubs at seasonal creek beds, bobcats hunting rattlesnakes on rocky slopes, golden eagle pairs working the thermals above the canopy. The footage is not curated or composed. It is simply what happens when an area is left undisturbed.

Changing how a city of thirteen million understands its wild neighbours is, as those working in this field describe it, as significant a conservation task as building any physical infrastructure. Most encounters between bears and residents end because the bear wants to leave. They just want their space. Mountain lion sightings are rare precisely because these animals move through a landscape they have learned to occupy on largely invisible terms. Awareness, built through documented evidence of what the mountains actually contain, is the foundation on which physical conservation solutions depend.

The challenge these mountains represent is not unique to California. Wildlife corridors are under pressure in every region where urban and agricultural expansion presses against what remains of natural habitat. The question of how large mammals coexist with dense human populations is one that will need answers across multiple continents over the coming decades. With Earth Day arriving next week, the most useful conversation is not about how much has been lost but about what continues to function, and why. Wildlife on the Edge, available to stream on Ecoflix, provides an unusually grounded account of this landscape from the inside – the kind of nature wildlife documentary that earns its subject matter rather than simply framing it.

The presence of mountain lions above Hollywood is not a curiosity. It is a conservation outcome: partial, pressured and continuously maintained by effort that mostly goes unnoticed. Understanding what that effort consists of is more instructive than any amount of general advocacy. The gap between wild and urban is narrower than most people assume, and more negotiable than the infrastructure suggests.

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External Links
National Park Service Santa Monica Mountains
National Wildlife Federation

First published in the Ecoflix newsroom.