Date: 7/31/25 2:59 pm
From: <chobbs.f1...>
Subject: RE: [cobirds] Jaeger Trends
Not the front range and certainly not a ‘trend’ given the historical data, but central KS (Cheyenne Bottoms, Barton County) had a Long-tailed observed 22 June 1955 and collected 23 June as a museum specimen. The summer Pom sightings are interesting.

Chris Hobbs
<chobbs.f1...>

From: <cobirds...> <cobirds...> On Behalf Of John Rawinski
Sent: Wednesday, July 30, 2025 4:22 PM
To: Colorado Birds <cobirds...>
Subject: Re: [cobirds] Jaeger Trends

Thanks Ted. Looks like mostly fall occurrences. Thanks!

John Rawinski
Monte Vista, CO
On Monday, July 28, 2025 at 2:41:39 PM UTC-6 Ted Floyd wrote:
On Mon, Jul 28, 2025 at 1:47 PM John Rawinski <johnra......> <mailto:<johnra......> > 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:

<https://groups.google.com/group/cobirds/attach/42ed85b924a1d/jaeger.png?<part...>&view=1>

(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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