I checked my Avisys records for Bent and Prowers for either raven and only came up with one record: Common Raven, Bent, May 31, 2004. In my eBird records I have 2 Common Raven at Hasty Campground on May 30, 2016 and 2 Chihuahuan Ravens at John Martin on May 28, 2017. Maybe Duane Nelson can add something. Ira Sanders
On Sun, May 26, 2019 at 10:37 AM coloradodipper via Colorado Birds < [email protected]> wrote: > All: > > I write to request help with discerning the occurrence pattern of Common > Raven in Prowers County. In my experience, the only ravens that I’ve > seen/heard in Prowers (away from the very southernmost bit by Two Buttes > SWA) that I was convinced were Commons -- and not the expected Chihuahuan > Raven -- were all in the fall/winter period, a period in which Commons seem > to spread out/wander. Additionally, all of my very few definite Common > Raven records in the county are from my previous sojourn in the state, so > the subsequent 11+ years might have seen a change in the species' > occurrence pattern. > > Because Prowers and Bent Counties are currently covered by the same eBird > filter, and because Common Raven is an expected breeding species in, at > least, southern Bent, the filter allows Commons all year in the filter > region, thus in Prowers County. As I did not record Common Raven in Prowers > in summer in my previous occurrence in the state and I have yet to record > it at all in my current sojourn here, I am confused by the eBird record for > the species in the county: > > > https://ebird.org/barchart?r=US-CO-099&bmo=1&emo=12&byr=1900&eyr=2019&spp=comrav > > Relevant to the discussion is my essay on raven ID in the In The Scope > column in *Colorado Birds:* > > https://cobirds.org/CFO/ColoradoBirds/InTheScope/63.pdf > > So, I’d appreciate the thoughts of those that have spent time in the > county AND paid careful attention to ravens there. I could use other > opinions, because I am in the process of splitting Prowers Co. out of the > current filter, and I need to figure out what to do with Common Raven. > > Thanks, > > Tony > > Tony Leukering > Wiley, CO > > -- > 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/738626592.4188595.1558888660830%40mail.yahoo.com > <https://groups.google.com/d/msgid/cobirds/738626592.4188595.1558888660830%40mail.yahoo.com?utm_medium=email&utm_source=footer> > . > For more options, visit https://groups.google.com/d/optout. > -- Ira Sanders Golden, CO "My mind is a raging torrent flooded with rivulets of thought cascading into a waterfall of creative alternatives." -- 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/CABF3siG_7FJYX9Seotp%3DSU5YuwqzY5Fi-z8O3-AhZL6YVVs7fQ%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
