July Birding Forecast

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By Alex Harper


Monsoon season began in mid-June and will go until late September throughout the Mojave Desert. Monsoonal weather patterns are kicked off as warm, moist air is moved into the region by winds originating in the Pacific Ocean and the Gulf of California. When moisture builds and the conditions are right, thunderstorms and thick cumulus clouds begin to move through southern Nevada. Occasionally, the clouds will release water in the form of precipitation, providing the living organisms with much-needed moisture and cooler temperatures.


The pulses of moisture may stimulate insect activity and population growth. This in turn can increase bird activity. In wetter years, cicadas or grasshoppers can be abundant in the Las Vegas Valley. These large insects are important food sources for the many young birds in the area and can help them survive the most challenging parts of their lives: learning to find food without the help of their parents. You may see neighborhood mockingbirds and grackles feeding on grasshoppers, or roadrunners at larger parks chasing them with high levels of success.


Whether or not the monsoons materialize in July, the month tends to be hot and on the slower side throughout the Valley for birds and birders. However, there are bright spots for those willing to brave the heat. Many shorebirds may already be migrating through the area. Shorebirds are some of the first migratory birds to return to the area during southbound migration; their numbers will continue to grow through August and into September. The first birds may be plains breeders such Long-billed Curlews, Willets, and Wilson’s Phalaropes, followed by shorebirds from the boreal forests and Arctic tundra. They are often made up of adult birds that have not bred successfully and have begun moving towards wintering areas, followed by successfully-breeding adults, and later the young birds born and fledged this summer. Look for shorebirds at Henderson Bird Viewing Preserve, the Las Vegas Wash, and flooding lake beds.

Another interesting phenomenon is the movement of some species of waterbirds from Mexico into areas of the desert southwest. In July and August, the Las Vegas area may be graced by unusually occurring wading birds: White Ibis, Roseate Spoonbill, Reddish Egret, Little Blue Heron and Yellow-crowned Night-Heron are all species that could show up at wetlands. These are probably young birds born this summer that are dispersing, possibly following the Colorado River up from Mexico and into southern Nevada. It seems that at least one or two of these species will be turned up by birders during July and August.



Birders can escape the heat by heading into the Spring Mountains. By July, many of the high elevation birds have raised young, and breeding activity has slowed. Although birds are less vocal and active, they are still present in these habitats. It won’t be until August that most migratory birds from the Mojave and Great Basin mountain ranges begin to move down into the lowlands, where the risk of encountering high heat and less food, cover and water negates the advantages of getting any head start on southbound movements. The exceptions are hummingbirds; Rufous and occasionally Calliope Hummingbirds will turn up starting in late July at higher elevations. These birds leapfrog across mountain ranges in search of the late summer blooms of penstemon, goldenrod, thistle, and more.

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By Alex Harper October 31, 2025
When the days grow shorter, the nights cooler, and winds begin to turn south, many birds begin to change their behaviors. The breeding season has come and gone. Some species spend their lives close to home, perfectly adapted to their habitats through all seasons. But for most North American songbirds, migration is a necessary annual act of survival in the seasonal pursuit of food, water, and safety. These include flycatchers, vireos, thrushes, sparrows, blackbirds, warblers, tanagers, grosbeaks, and buntings. As insects vanish and leaves fall across northern regions, many birds push south, traversing mountains, valleys, and deserts in search of suitable habitat. Many of these birds are intending to make their way to the warmer climates of Mexico and more tropical areas for the colder months. In the arid expanse of the Mojave Desert, safe stopover sites are few and far between. Migrants that are not desert specialists often must locate oases, which are small pockets of water, shade, and food, to rest and refuel. Some are natural: mountain springs and creeks, valley wetlands, or canyons. Others are entirely human-made: parks, cemeteries, and towns where irrigation and ornamental trees create relatively lush islands in a sea of desert. These green patches, although artificial, can mean the difference between exhaustion and success for a traveling flycatcher or warbler. One such refuge sits right on the California-Nevada border along I-15. This is the “town” of Primm. To most travelers between Los Angeles and Las Vegas, it’s another brief stop for gas and food. A defunct roller coaster and closed shopping outlet give the impression that Primm’s prime is behind us. But for birders, it’s a birding hotspot. Primm’s irrigated lawns and runoff from water sources draw birds from miles around. Its small size makes it easy to cover, and its isolation makes it stand out. It’s an island of green surrounded by dry lake beds and sparse vegetation. Primm is a classic “migrant trap,” where the color green and promise of water concentrates birds in one small place. Though songbirds navigate with remarkable precision by reading the stars, reading the Earth’s magnetic fields, and using landmarks - they do sometimes go astray. Young or disoriented individuals may travel the right distance but in the wrong direction, bringing eastern or Great Plains birds into western deserts. For birders, these navigational errors are the source of exciting discoveries, especially in the Fall. When one rare bird is found, more often follow. This is the “Patagonia Picnic Table Effect,” named after a famous site in Patagonia, Arizona, where a single unusual sighting decades ago triggered a rush of birders who went on to discover even more rarities. Primm functions much the same way: one exciting report draws others to look, and the increased attention yields more discoveries. The town’s lawns and patches of trees may not be appealing, but birders affectionately call it the “Primm Forest Preserve,” a tongue-in-cheek tribute made by biologists working in the region in the mid-2010s. The Fall of 2025 was especially exciting, with Baltimore Oriole, multiple Painted Buntings, a Blackburnian Warbler, Yellow-throated Warbler, and more showing up in a short amount of time. As birder and biologist Michael McCloy shared, “This oasis contains some of the only real trees and water for miles, acting as a magnet for any migrating songbirds in need of rest and refueling.” During his near-daily visits this September, he witnessed moments of pure wonder: “One day I turned around and there was a Lark Bunting and a Dickcissel at the same roadside puddle. Another day, a Marsh Wren perched twenty feet up in a tree. And when a Black-throated Blue Warbler showed up, it came within three feet of me. I wondered if it was going to land on my arm.” For Clayton Peoples, who visits regularly from Reno, Primm has become a staple of southern Nevada birding. “It’s one of my go-to places,” he said. “I used to stay at Buffalo Bill’s just to be right there at sunrise.” Clayton recalls finding a Nelson’s Sparrow with Dave Anderson, a Dickcissel while searching for a Painted Bunting, and most recently a hatch-year female Black-throated Blue Warbler. Many of these birds are considered “ review list ” for Nevada. He shares updates through the WhatsApp groups and Facebook, helping others join in on sharing are bird sightings. For birders from across the state, Primm has become an unlikely meeting ground for the birding community. On a population scale, migrant traps like Primm may seem insignificant. But for individual birds, these patches of green can mean survival - a brief chance to rest, feed, and rebuild strength before continuing south. Every visit is a gamble with the possibility of reward, especially in April-early June and August to late October when most songbirds are migrating. Whether you’re in Primm, Corn Creek, Indian Springs, or a patch of trees in your neighborhood park, have a look and be open to the idea of finding something you wouldn’t expect. You never know what might drop in. 
October 30, 2025
By Alex Harper By November, most of the wintering songbirds have settled into their wintering territories for the winter months. In and around our neighborhoods and small parks, Northern Flickers, Ruby crowned Kinglets, Yellow-rumped Warblers and White-crowned Sparrows have become part of the urban and suburban winter makeup. Brewer’s Blackbirds arrive in force, joining grackles and hanging around parking lots and busy parks. Our Empidonax flycatchers, vireos, most species of wood-warblers, orioles, grosbeaks and tanagers have long-departed for the warmer Sonoran Desert, woodlands in Mexico, or tropical areas of Central and South America. We won’t begin seeing these birds again until March, April, and May. At our wetlands and artificial ponds and lakes, waterfowl diversity and numbers increase through the month. Redheads, Ring-necked Ducks, Buffleheads, and dabbling ducks stream in from waterbodies from the north. One can observe this movement from the bank of Clark County Wetlands Park, where birds follow the Wash as they explore new foraging areas. Parks like Sunset Park and Craig Ranch Park can be great places to observe some of the ducks at close range. At Lake Mead, check 33-Hole for loons and wintering gulls, and Boulder Beach for Greater Scaup and unusual diving ducks like scoters. Scoters feed on mollusks and take advantage of the invasive Quagga Mussel population at some parts of the lake. Geese also wander in the valley. Along with Canada Geese, search for Greater White-fronted Geese and Snow Geese at parks and athletic fields. Small numbers of Ross’s and Cackling Geese mingle at these sites with the larger geese. By the end of the month, it is not unusual for Tundra Swans to make brief visits to our watercourses. At our more well-vegetated parks, keep an eye and ear out for other wintering species. Northern Harriers frequent the bird preserve and the Wash. Hermit Thrushes and Spotted Towhees can be found anywhere with enough understory, though are a bit too shy for most urban parks. Some cultivated plants such as California Fan Palms and Russian Olives begin to produce fruit, which can lure in flickers, robins, waxwings, starlings, mockingbirds and more. Keep an eye out in your neighborhood for such plants. November is a great month for those looking for unusual and infrequent bird species. Corn Creek at Desert National Wildlife Refuge, Floyd Lamb, and any of our large parks can lure in species such as Eastern Phoebe, Pacific Wren, Varied Thrush, Gray Catbird, American Tree Sparrow, Swamp Sparrow, Harris’s Sparrows, Golden-crowned Sparrow, and Lapland Longspur all could show up in the Las Vegas area this November. These are all hardy species that can overwinter in the region and endure the occasional freezes. .
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By Alex Harper October is a month of intense change for bird diversity in southern Nevada. The experience that one might have at the very beginning of the month is likely going to be very different from the end. Throughout the month, transiting birds arrive with gradually intensifying cold fronts coming from the north. These colder temperatures begin to suppress insect activity, forcing most insect-eating birds to move to lower latitudes where food is more consistent. Many of our vireos, thrushes, flycatchers, warblers and tanagers will spend their winters anywhere from Mexico to South America. In these locations, they are as equally at home as they are in North America, and there are enough insects and fruit-bearing trees to accommodate the diversity of residential birds and the snowbirds. Like passing waves, each front helps to propel birds to the north into southern Nevada, while moving other birds out to more southerly areas. The assemblage – the totality of birds represented at one location during a snapshot in time – also take on an identity that marks a later stage of songbird migration. These are the more cold-tolerant species of birds that can find food and survive under colder conditions, and many of them signal the approach of winter. Sapsuckers, flickers, Ruby-crowned Kinglets, Yellow-rumped Warblers and White-crowned Sparrows are some of these, and they will become more noticeable throughout southern Nevada’s popular birding sites. Migratory flocks of American Robins may join our resident robins, and Brewer’s Blackbirds begin to appear more and more in all the places we’d expect to see Great-tailed Grackles. Some are passing through to areas farther south, while many others will establish wintering territories in parks and neighborhoods. There is still very little known about how birds establish themselves individually over the landscape in these ways, but this is happening for all of October in southern Nevada. Sparrow diversity changes drastically during this phase of migration. Chipping and Brewer’s Sparrows continue to move out towards grassier areas such as Avi Kwa Ame National Monument, the Sonoran Desert and Mexico. Savannah Sparrows move into weedy areas and even ballfields in suburban parks. Lincoln’s quietly take over stands of invasive Phragmites or wetland edges. Dark-eyed Juncos prefer grassy parks with groves of trees. Look through amassing groups of boisterous White-crowned Sparrows for Golden-crowned and White throated Sparrows. Many sparrows will take advantage of the bounty of seeds that were produced during the closing growing season. At wetlands, transient shorebirds have mostly moved in and out, and waterfowl begin to move in. Southern Nevada hosts about twenty-five species of geese and ducks. Many of them will be arriving from wetlands in the Great Plains, Great Basin, or beyond. Visit the bird preserve or Las Vegas Wash in the morning and watch the numbers of waterfowl moving in and out of the region to appreciate the volume of ducks that move through the Las Vegas Valley. October is a great month for wildcard birding. During October, more irruptive species may be absent or present. Irruptive species are species of birds whose movements are dictated by resources that are less influenced by altitude and are more influenced by other factors. In the Western United States, Red-breasted Nuthatches and most finches tend to be the most irruptive, since their food sources are usually cone-bearing trees. Birds gravitate towards crops of successful trees and avoid areas with less success. This can be problematic if more trees in more regions begin to fail. Witnessing Red Crossbills, Evening Grosbeaks and other montane finches in the Las Vegas is possible in October. Finches are often moving between mountain ranges looking for good pine, fir or spruce crop and drop into lowland parks to drink water. Other wildcards could be wayward eastern songbirds that are out of the range that we expect them in. Warblers are especially prone to showing up, and the classic areas to look for uncommon species are areas that have tall trees, some groundcover (the more, the better) and water. Some popular places to search for many migratory land birds include Corn Creek Field Station, Floyd Lamb Park, the Henderson Bird Viewing Preserve, Clark County Wetlands Park, and Craig Ranch Regional Park. The more you get out with the intention of noticing more, the more chances there are to notice the birds that stand out as different.  Get out on the days following cold fronts and observe the changes since the last one. There are insights to glean from those experiences, and they are all useful in your own endeavor to understand the movements of birds around you. .