río embudo birds


Examples of coordinating the use of the Dixon CBC data graphs
and the Audubon feature "Where Have All the Birds Gone?"


Here is the graph for American Kestrel on the Dixon Count (Individuals / Party-hour):
The local winter population is certainly trending downward!

Here is the Audubon map (Credit) for the American Kestrel (Note that the selected "Unit" is "Bird Conservation Region".)
The tip of the arrow shows precisely the location of the Dixon Count: Using the key just above the map, one can see that while the winter Kestrel population in some areas (blues) are increasing, the population in our area (red-orange) is indeed decreasing.

The Dixon Count "Bird Conservation Region" is Southern Rockies/Colorado Plateau When you use the "Where Have All the Birds Gone?" feature, you can scroll across the map to see the annual percentage increase or decrease for each region.


If you use the "Where Have All the Birds Gone?" feature in the "Bird Conservation Regions" mode, the Dixon Count location will always be the same relative to the region boundaries.

Here are a few more examples showing the Dixon Count graph and then the Audubon "Where Have All the Birds Gone?" map:

Bufflehead on the Dixon Count (Individuals / Party-hour):

Audubon map for Bufflehead:


Brown Creeper on the Dixon Count (Individuals / Party-hour):

Audubon map for Brown Creeper:


Lewis's Woodpecker on the Dixon Count (Individuals / Party-hour):

Audubon map for Lewis's Woodpecker:


White-winged Dove on the Dixon Count (Individuals / Party-hour):

Audubon map for White-winged Dove:




Credit: All of the Audubon "Where Have All the Birds Gone?" maps were created by: Meehan, T.D., LeBaron, G.S., Dale, K., Michel, N.L., Verutes, G.M., and Langham, G.M. 2018. Abundance trends of birds wintering in the USA and Canada, from Audubon Christmas Bird Counts, 1966-2017, version 2.1. National Audubon Society, New York, New York, USA.