Actions

File

Number calibration.pdf

From SibleyBirds

Number_calibration.pdf(file size: 175 KB, MIME type: application/pdf)


Species
Subspecies
Age
Sex
Plumage aspect
Subject
Shows behavior
Is habitat for
Location
Town
County
State
Country
Date
Created by David Sibley
Image type pdf
Documents record
Notes A one-page quick reference designed as an aid to estimating numbers in the field. Research has shown that one of the main sources of error and variation in our estimates of numbers is the absence of a known number for "calibration". Looking at this image in the field will give a clear sense of what 100 dots look like, and will provide a sort of baseline for estimating numbers in flocks of birds.
Tags


Add this image to any page by pasting this text

{{Image fullwidth |filename=Number calibration.pdf |caption= - , . . © [[David Sibley]] }}


© David Sibley - All rights reserved

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeDimensionsUserComment
current04:20, 9 December 2015 (175 KB)David Sibley (Talk | contribs)rearrange images and add explanation
10:37, 8 December 2015 (281 KB)David Sibley (Talk | contribs)reduce file size
10:27, 8 December 2015 (1.24 MB)David Sibley (Talk | contribs)
  • You cannot overwrite this file.

There are no pages that link to this file.