Synopsis: A tech‑powered search for a Western Cattle Egret led Jim Ross and me to a thriving Shumway Park rookery, where community tips, eBird atlas data, and an hour of photography documented successful nesting by four heron and egret species.

Some birding days begin with a plan; others begin with a question tossed into the digital wind. Today’s quest started with both. My friend Jim Ross and I were chasing down a Western Cattle Egret for his 2026 Bird Photography Big Year. I was a couple of species ahead of him, and we decided it was time to even the score by helping him land this one. So we turned to one of the most powerful tools in modern Central Valley birding: the San Joaquin Birds WhatsApp group. Within minutes, our community delivered. Several birders suggested we try Shumway Oak Grove Park in North Stockton, where egrets had been active in recent days.

As we drove north, our conversation drifted toward the California Bird Atlas, the ambitious statewide eBird‑powered effort led by Van Pierszalowski. The project is reshaping how we document breeding birds across California—one checklist, one confirmed behavior, one careful observation at a time. Every species we encounter now carries a second layer of meaning: not just a tick for a Big Year, but a data point in a living atlas. For each bird, we note breeding codes, behaviors, habitat use, and any evidence of nesting. It’s citizen science at its most elegant—thousands of observers, each adding a thread to a statewide tapestry of avian life.

When we arrived at Shumway Park, the soundscape told the story before our binoculars did. The trees were alive with the croaks, squawks, and bill‑clattering of a full heron and egret rookery. Dozens of birds were ferrying sticks, arranging nests, feeding young, and defending territories. For the next hour, we photographed, documented, and marveled. Four species—Black‑crowned Night Heron, Western Cattle Egret, Snowy Egret, and Great Egret—were all actively nesting, all successfully breeding, and all offering the kind of intimate natural history moments that make a morning unforgettable.

Below are the species accounts for the day’s discoveries.

Black‑crowned Night Heron

The Black‑crowned Night Herons were the rookery’s brooding elders—stoic, red‑eyed silhouettes tucked deep into the foliage. Their nests, bulky platforms of sticks, were wedged securely in the mid‑canopy where shade and cover help protect their altricial young. We watched several adults carrying stout twigs, each one placed with deliberate care as mates shifted and reshaped the nest beneath them. Night Herons prefer colonies like this, where the safety of numbers offsets the vulnerability of raising helpless chicks. Their presence signaled a well‑established rookery with years of successful breeding behind it.

Western Cattle Egret

Our target species did not disappoint. Western Cattle Egrets bustled through the rookery like energetic construction workers—short‑necked, orange‑crowned, and determined. We photographed multiple birds carrying sticks, grass stems, and leafy sprigs, each returning to nests that already held recently hatched, downy, altricial chicks. Adults leaned in to feed their young with the rhythmic, gulping motions typical of regurgitative feeding. Cattle Egrets nest in tight clusters, often just a few feet apart, relying on dense colony structure to deter predators. Seeing active nests with chicks was not just a Big Year victory—it was confirmed breeding evidence for the Atlas.

Snowy Egret

The Snowy Egrets added elegance to the chaos, their golden lores glowing like embers against their immaculate plumage. They carried long, flexible sticks to nests balanced on horizontal limbs, often lower in the canopy than the larger egrets. Snowies are meticulous builders, weaving platforms that can support their notoriously animated chicks once they hatch. Their breeding displays—raised plumes, quick chases, and sharp vocalizations—were happening all around us, signaling that many pairs were still early in the nesting cycle. Their presence highlighted the rookery’s habitat diversity, offering suitable sites for species with different nesting preferences.

Great Egret

Towering above the others, the Great Egrets claimed the highest branches, their nests broad and sturdy to support their larger bodies and more demanding young. We watched several adults glide in with long sticks, landing with the slow, parachuting grace that only Great Egrets can manage. Their nest‑building is a cooperative dance: one bird delivers materials while the other arranges them with deliberate, sweeping motions of the bill. Great Egrets require strong, stable limbs and a clear vantage point—conditions Shumway Park provides in abundance. Their active participation rounded out the rookery’s full suite of heron and egret species.

As we walked back to the car, memory cards full and spirits high, we felt the quiet satisfaction that comes from witnessing a thriving breeding colony. Four species, all nesting successfully. Dozens of photographs documenting behaviors that matter not just to us, but to the California Bird Atlas, to eBird, and to the broader understanding of Central Valley bird life. What began as a simple search for a Cattle Egret became a celebration of community science, digital collaboration, and the enduring resilience of birds that return each spring to raise the next generation.

If this morning proved anything, it’s that birding in 2026 is a blend of boots on the ground, eyes to the sky, and thumbs on the screen—and when all three work together, remarkable things happen.

Additional Photographs