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:
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 <flammowl17@gmail.com> 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, COOn Sun, Apr 28, 2019 at 6:46 PM Eric Storms <ericbs1975@gmail.com> 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 StormsCastle RockPS - thanks to everyone who had posted updates on the yellow throated vireo!
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