Western Meadowlark

The breeding season runs from approximately February into late August, varying by latitude. In Montana, nesting occurs from the second week of May to the first week of August, with egg dates near Fortine ranging from 30 April to 23 June. Males are polygynous — a successful male typically mates with two females simultaneously, though monogamy also occurs.

The nest is built solely by the female, typically within 6–8 days of her arrival on the breeding grounds. She places it on the ground in a small depression or hollow — often a cow footprint — well concealed in dense grass. The finished structure ranges from a simple grass-lined cup to a fully domed construction with a waterproof grass roof and a side entrance, measuring 18–20 cm across with a cup 10–13 cm wide and 5–8 cm deep. Narrow "runways" or trails through the surrounding grass lead to the entrance, and the female always approaches on foot rather than flying directly in, to avoid drawing attention.

Clutch size is typically 5–6 eggs (range 3–7). The eggs are white, profusely spotted with brown, rust, and lavender, especially at the larger end, and measure approximately 28 × 21 mm. Eggs are laid at daily intervals, with incubation beginning after the last egg is laid. The female incubates alone for 13–16 days. Chicks hatch over 1–2 days; they are altricial — nearly naked, with eyes closed until day 4.

Both parents feed nestlings, though the female does more, with the male typically bringing food to the nest entrance for her to distribute. The young fledge at 10–12 days but cannot sustain flight until around 21 days. Parental care continues for at least two weeks after fledging. Two broods per year are attempted. Nests are frequently parasitised by Brown-headed Cowbirds (Molothrus ater), and are also vulnerable to destruction by mowing operations — a significant source of nest failure across agricultural landscapes.

Wild Western Meadowlarks typically live 3–6 years, with the oldest banded individual on record reaching at least 6 years and 6 months. The species reaches sexual maturity at around one year of age, with most birds attempting to breed in their first spring. Captive individuals have been recorded living up to 10 years, suggesting that the pressures of wild life — predation, weather, and habitat quality — are the primary constraints on longevity.

Nest predation is a major source of mortality, with ground nests vulnerable to a wide range of mammalian predators including foxes, coyotes, skunks, and raccoons. Brown-headed Cowbird parasitism reduces reproductive success without directly killing adults. Mowing of hay and alfalfa fields during the nesting season destroys nests and kills incubating females and chicks directly — a significant and underappreciated source of mortality in agricultural landscapes.

Adults face predation from raptors, particularly Northern Harriers, which hunt low over grassland in the same habitats the meadowlark occupies. Pesticide exposure — both direct poisoning and indirect reduction of insect prey — is an increasingly recognised mortality factor. Compared to other members of the Icteridae family, the Western Meadowlark's maximum recorded lifespan is modest: the Common Grackle, for instance, has been recorded living over 23 years in the wild. The meadowlark's ground-nesting lifestyle and open-country habits expose it to a broader range of predators throughout its life.

The Western Meadowlark is listed as Least Concern on the IUCN Red List (2018), with a global population estimated at approximately 100 million individuals (Partners in Flight, 2020). Despite this, the trajectory is troubling: North American Breeding Bird Survey data show a decline of approximately 0.9% per year between 1966 and 2019, amounting to a cumulative loss of around 37% over that period. The species is part of a broader grassland bird crisis — grassland birds as a group have declined by more than 40% since 1970.

The primary driver is habitat loss. Conversion of native grasslands for housing and intensive agriculture has eliminated vast areas of suitable nesting habitat. Tilling and early haying operations destroy nests, fledglings, and adults directly. Pesticide use — particularly neonicotinoids — kills meadowlarks directly, poisons their insect food supply, and reduces overall prey abundance. Fire suppression alters native grassland structure, while invasive plant species degrade habitat quality. Climate change adds further pressure through drought, unseasonal heat waves, and extreme wildfires that affect nesting success.

In Oregon, the species is listed as Sensitive-Critical on the state's Sensitive Species List, reflecting particularly sharp declines in the Willamette Valley. Partners in Flight rates the Western Meadowlark 10 out of 20 on the Continental Concern Score — relatively low concern at the continental scale, but the downward trend is consistent and long-running.

Conservation actions include the American Bird Conservancy's grassland habitat enhancement programme, which has improved over 400,000 acres from North Dakota to Mexico. Advocacy for bird-friendly Farm Bill measures — particularly the Conservation Reserve Program, which pays farmers to convert cropland to perennial grass cover — is considered one of the most effective tools available. Campaigns against dangerous pesticides and support for prescribed burning to maintain grassland structure are also priorities.

Male Western Meadowlarks arrive on the breeding grounds up to a month before females, spending this time establishing territories through song and aerial pursuit flights. Once females arrive, courtship intensifies into a series of elaborate visual displays that make full use of the male's striking plumage.

The primary courtship display involves the male facing the female directly, puffing out his chest feathers to maximise the black "V" and brilliant yellow breast, pointing his bill straight upward, spreading his tail widely to expose the white outer feathers, and flicking his wings rapidly. The posture is designed to show off every element of his breeding plumage simultaneously. Males also perform song flights — rising into the air above their territory while delivering the full song, then descending back to a perch.

Western Meadowlarks are typically polygynous: a successful male mates with two females simultaneously, maintaining separate territories for each. He defends a primary territory of 2–13 hectares against rival males through song and, when necessary, direct pursuit. Territorial boundaries are often stable across seasons, with experienced males returning to the same territories in successive years.

Females exercise mate choice and appear to prefer males with larger territories and more complex song repertoires. Once a pair bond is established, the female begins nest construction within days. The male's role during incubation is largely vocal — he continues to sing from perches near both nests — but he becomes more actively involved in feeding once chicks hatch, bringing food to the nest entrance for the female to distribute to nestlings.

Few North American birds carry as much symbolic weight as the Western Meadowlark. Its status as the official state bird of six states — Kansas (1937), Montana (1931), Nebraska (1929), North Dakota (1947), Oregon (1927), and Wyoming (1927) — reflects how deeply embedded it is in the cultural identity of the American West and Great Plains. No other bird shares this distinction at such scale; only the Northern Cardinal, state bird of seven states, surpasses it.

The species' scientific name carries its own cultural narrative. Meriwether Lewis first documented the bird during the Lewis and Clark Expedition in June 1805, noting carefully that its song, bill shape, and tail differed from the Eastern Meadowlark he knew from the East. His observation was ignored for nearly four decades. When John James Audubon formally described the species in 1844, he named it Sturnella neglecta — "the neglected starling-like bird" — as a direct rebuke to the ornithological community that had overlooked Lewis's field notes.

The meadowlark's song has long been celebrated in American literature and music as the sound of the open prairie. Its flute-like, gurgling melody carries across grasslands with a clarity that early settlers found both beautiful and orienting — a sound that meant open country, space, and the West. In Oregon, the bird's cultural status was reaffirmed as recently as 2017, when a state legislature debate over its designation prompted a representative to play its song over the House microphone — a moment that ended in a compromise rather than a demotion, preserving the meadowlark's place in Oregon's official symbolism.