Date: 12/6/18 1:40 pm From: DJ Lauten and KACastelein <deweysage...> Subject: [obol] Re: new CBCs and gaps
I second that emotion.......
Cheers Dave Lauten
On 12/6/2018 1:27 PM, Alan Contreras wrote: > Ugh. > > Alan Contreras > <acontrer56...> <mailto:<acontrer56...> > Eugene, Oregon > > www.alanlcontreras.com <http://www.alanlcontreras.com> > > >> On Dec 6, 2018, at 1:24 PM, W. Douglas Robinson >> <w.douglas.robinson...> <mailto:<w.douglas.robinson...>> >> wrote: >> >> Here he goes again…eBird this, eBird that. But, why do we need new >> CBCs to fill gaps in winter bird information? >> >> We could have fun visiting a poorly-counted place, coordinate the >> counting so multiple teams are out on the same day in nearby areas, >> and share results at the end of the day over hot food and drinks, all >> without the paperwork and bu-ro-crazy of a CBC. >> >> In fact, simply eBirding the effort could be argued to be more >> scientifically useful. If each party created new checklists for each >> place they counted birds, instead of summing up (guessing) how many >> birds of each species they had all day long in their CBC section, >> then the counts are actually much more useful for repeat efforts in >> the future. >> >> Let’s face it, CBC protocol has barely changed in 100 years. But we >> have learned a whole lot about the problems of using such bird count >> data to learn much that is scientifically defensible about population >> changes over time. One of the biggest challenges is not knowing >> exactly where the data were gathered (variation from year to year in >> routes, time at stops in sector, different observers who count >> numbers in different ways, etc, ad nauseam). With eBird it is very >> easy to create new personal locations at each stop you make all day >> long and keep more accurate count data that someone then has a chance >> to repeat with some level of confidence they are doing it the same >> way you did. >> >> No constraints of staying inside the circle of a diameter that has no >> clear biological justification. No commitment to try and count it >> every year. No worries about minimum number of people participating. >> Also no worries about site overlap or avoiding double counting. All >> the modern bird counting literature says that we can soooo much more >> about bird numbers when we DO count the same sites more than once. >> >> Identify some of the under-birded places, gather up interested >> friends to go count birds, archive the data in eBird (call it a CeBC, >> if you will), socialize, and then go find another under-explored >> place next time. >> >> At some future time, eBorg will eat the CBC database anyway. It makes >> logical sense and National Audubon is an eBird partner. Maybe this >> dire prediction of assimilation gives us a little extra willingness >> to feel like we can make meaningful contributions without being >> inside an official circle. >> >> But continue supporting your favorite CBCs. I look forward to a >> couple myself this winter. >> >> Doug >> >> >> POST: Send your post to <obol...> <mailto:<obol...> >> JOIN OR QUIT: http://www.freelists.org/list/obol >> OBOL archives: www.freelists.org/archive/obol >> <http://www.freelists.org/archive/obol> >> Contact moderator: <obol-moderators...> >> <mailto:<obol-moderators...> >> >