Thanks for explaining. Probably not enough people looking for Ash-throated Flycatchers earlier in April in Fremont County (or older sightings haven't been entered in e-bird). Since I've seen them many times in April in Pueblo County, one county to the east of Fremont County, I would think they are around Fremont County regularly in April too.
-- Brandon Percival Pueblo West, CO On Sun, Apr 28, 2019 at 7:58 PM Kathy and Jeff Dunning < [email protected]> wrote: > Hi Brandon and all - > > eBird filters are generally set up on the 4 eBird "weeks" with beginning > dates of 1st, 8th, 15th and 22nd, so we're currently in the week beginning > 22 April; the next "big" filter jump will occur on 1 May. A lot of things > flagging rare on the 30th of April will cease to do so on the 1st of May. > > For rarities, the review team generally utilizes a 1% rule. Ash-throated > Flycatcher (ATFL) is reported on only 0.36% of eBird checklists from > Fremont in the last week of April, thus the filter is set to zero. See: > > https://ebird.org/barchart?r=US-CO-043&bmo=1&emo=12&byr=1900&eyr=2019&spp=astfly > > > Until today's sightings, there was EXACTLY one Fremont County eBird record > of ATFL in the ENTIRE month of April (and this occurred on April 30th). > This is thus the earliest ATFL ever recorded in Fremont County. Congrats! > > Good birding, > Kathy Mihm Dunning > Denver > > On Sun, Apr 28, 2019 at 6:56 PM Brandon <[email protected]> wrote: > >> >> I don't really understand the e-bird filters sometimes (most of the >> time). Ash-throated Flycatcher is a common breeding species in Fremont >> County. I have no idea, why April 28th, would be too early for them to be >> in that county. I saw one in Pueblo County on Friday, which they breed >> here too (and e-bird didn't flag that sighting). >> >> Interestingly, Kara Carragher and I also saw a partially leucistic >> Yellow-rumped Warbler, on the eastern part of the Canon City Riverwalk, >> yesterday. >> >> Brandon Percival >> Pueblo West, CO >> >> On Sun, Apr 28, 2019 at 6:46 PM Eric Storms <[email protected]> wrote: >> >>> Had a great day of birding down at Canon City today. We started off by >>> finding the yellow-crown night-heron reported by Brandon Percival at Sell >>> Pond. Highlights along the adjacent riverwalk were a western tanager, >>> orange crowned warbler and what appears to be a partially leucistic yellow >>> rumped warbler. After the riverwalk we went to Brush Hollow Reservoir. We >>> found a pair of ash throated flycatchers on the west side of the lake, >>> tucked into a canyon. Ebird listed them as rare so wanted to pass the info >>> along should somebody want to see them. >>> >>> I am adding pictures of both for reference. >>> >>> Eric Storms >>> Castle Rock >>> >>> PS - thanks to everyone who had posted updates on the yellow throated >>> vireo! >>> >>> -- -- You received this message because you are subscribed to the Google Groups "Colorado Birds" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/cobirds/CA%2BXeEuXTzXxz6Aw%2Ba9s36PChW_Hu2fHcsyiHGKXi1sL8mCyZ5g%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
