On Mon, Jul 28, 2025 at 1:47 PM John Rawinski <johnrawinski0...>
wrote:
Hi all: I am wondering when the jaegers have their peak arrival along the
> front range. With only two records for the San Luis Valley, I always watch
> for them and would like to know their pattern for occurrence along the
> front range. Thanks.
Good question, John!
The short answer is: Long-tailed first, then Parasitic, then Pomarine. The
following is oversimplified, but:
* Aug.—probably Long-tailed.
* Sept.—any of the three, with Parasitic most likely.
* Oct.—mostly Pomarine from mid-month onward (and well into Nov., even
Dec.); Parasitic possible, esp. early in the month; Long-tailed unlikely.
Here is eBird output for nine (*n*=9) Front Range counties:
[image: jaeger.png]
(Midsummer jaegers, very rare in Colo. and elsewhere in the Lower 48
Interior, tend to be Poms, a pattern borne out both in the Front Range
counties and statewide. Spring jaegers—we have a handful of well-attested
Colo. detections!—defy reason.)
Ted Floyd
Lafayette, Boulder Co.
Blanca Wetlands had 12 species of shorebirds today. North Mallard was a
> hotspot and is easily accessed.
>
> John Rawinski
> Monte Vista, CO
>
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