It is helpful, after you convert the image to 8-bit, to try to subtract the background of the image. Feel free to try to count them manually before getting the result from ImageJ. You can distinguish most of the birds at the lower-right of the image. You need to click on the image in order to get the full resolution (4912 x 2760). A specialized program was written, called FLAMINGO (distributed under the CeCILL license, a French free and open-source software license), that can count populations of birds that their body shape is shown as an ellipse in aerial photographs. He calculates the error from the automated counting from the images. The specific software is closed-source, for Windows only and was last updated in 2002.Īnother option that is suitable for bigger birds such as flamingos is described at An automatic counter for aerial images of aggregations of large birds (2011) ( full text) by Arnaud Béchet et al. Pérez-García in The use of digital photography in censuses of large concentrations of passerines: the case of a winter starling roost-site (2010) describes how to use the UHTSCSA Image Tool 3.0 (specialized image processing software primarily for medical applications) in order to count the population of flocks. There are several efforts to use software to count birds and other wildlife. Without a computer-assisted method, it is easy to over/under-estimate the count, and worst of all, there is no way to provide evidence of your count to a third-party. However, when there is a flock with dozens, hundreds or thousands of birds, there is need for an automated (computer-assisted) method to count the birds. We normally see around a few birds and it is rather easy to count them.
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