6 November 2026

Nesting

Sunday, May 24th, 2020
Black-headed Grosbeak mama on the nest, East Millcreek, Salt Lake City, Utah, 24 May 2020.
Black-headed Grosbeak mama on the nest.

An earlier, dryer hike than yesterday’s. Although not quite as birdy, still exceptionally satisfying.

Blue-gray Gnatcatcher, East Millcreek, Salt Lake City, Utah, 24 May 2020.
Blue-gray Gnatcatcher.

Most notable are subtle differences in behavior among the resident species—differences that mean there’s been nesting, hatching, even fledging going on. Earlier nesters (like Spotted Towhees) have gone a bit quieter and more secretive. Magpies (which might well have the earliest fledglings here) have turned suddenly vocal and pugnacious. And later arrivals have just begun incubating. Like the pair of Black-headed Grosbeaks whose nest near (the trailhead) I found the female occupying today.

The only other actual nest I’ve found is the gnatcatchers’ (a tiny thing above a shady stretch of trail), whose photo you’ve seen here recently. But I know where several other birds’ nests are—or will be—judging by just the behavior of the birds.

(E.g., the male MacGillivray’s warbler whose declarative song is evidence of its claim to a tangly mass of foliage, waiting expectantly for just the right female to arrive.)

Grandeur Peak Area List
Beginning at 7:45 a.m., I hiked a few hundred feet up a mountain.

1. California Quail (v)
2. Black-billed Magpie*
3. Lazuli Bunting
4. House Finch*
5. Song Sparrow* (v)
6. Black-headed Grosbeak
7. Blue-gray Gnatcatcher**
8. Broad-tailed Hummingbird (wing-trill)
9. Spotted Towhee
10. American Robin*
11. Black-capped Chickadee (v)
12. Pine Siskin
13. Black-chinned Hummingbird
14. Western Tanager
15. Black-throated Gray Warbler (v)
16. Warbling Vireo (v)
17. Chukar (v)
18. Chipping Sparrow
19. MacGillivray’s Warbler
20. Lesser Goldfinch (v)
21. Hammond’s Flycatcher†

Elsewhere

22. Eurasian Collared Dove

Mammals

Mountain Cottontail

(v) Voice only
*Also elsewhere
**Voice only elsewhere

†First-of-year bird

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Bird Report is a (sometimes intermittent) record of the birds I encounter while hiking, see while driving, or spy outside my window. —Brian Willson



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