eBird limitations

[Steve Larson]

Hi All,

In this mornings Colorado Rare Bird Alert Joe Roller stated "This is the first CO eBird record away from the Front Range and the Arkansas Valley." A quick perusal of my own personal records shows three Pine Warblers in CO in NE CO; 9/1/2006 at Prewitt Res, 9/30/2012 at Holyoke Cemetery and 11/25/2012 at Tamarack Ranch. All of these were seen by several people and are not, apparently, in the eBird data base.  These are all pretty recent sightings and makes me wonder how many other sightings are out there that have not made their way to the very incomplete eBird data base for CO? I realize this might be heresy for the digitally inclined.

Respectfully,

Steve Larson 

Northglenn, CO

[Kathy and Jeff Dunning]

All -

I believe Joe meant to say "This is the first CO eBird record away from the Front Range and the Arkansas Valley in December." as the eBird map clearly shows many Pine Warbler records on the eastern plains on the year-round map, but change the date range to December and the data is confined to the front range and Ark Valley.

But, Steve's point is extremely valid as eBird is a relatively recent phenomena and there are many observations of notable occurrences that are not reflected in eBird (and many will never make their way to eBird).  Additionally, there are recent records of birds which do not appear in eBird as not every birder uses eBird.  Heresy indeed  ;-)

Good birding,
Kathy Mihm Dunning

Denver

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[John Rawinski]

Very true for the San Luis Valley where various folks and myself have been keeping non digitized records for many years. 

John Rawinski

Monte Vista, CO