In nature, many animals build structures that can be readily measured at
the scale of their gross morphology (e.g. length, volume and weight).
Capturing individuality as can be done with the structures designed and
built by human architects or artists, however, is more challenging. Here,
we tested whether computer-aided image texture classification approaches
can be used to describe textural variation in the nests of weaverbirds
(Ploceus species) in order to attribute nests to the individual weaverbird
that built them. We found that a computer-aided texture analysis approach
does allow the assignment of a signature to weaverbirds' nests. We
suggest that this approach will be a useful tool with which to examine
individual variation across a range of animal constructions, not just for
nests. Images of village weaver
nests- 2008These are the raw images
used in our texture analysis of weaverbird nests. Images are of the
completed nests of: six Village weavers (Ploceus cucullatus) collected in
June and July 2008, from, Laminga Village, Jos, Nigeria. The filename
indicates which male build the nest (M), which of that males nests the
image is of (N) and which face of the nest the image is of (e.g. front).
So an image of the front of Male 1’s, second nest would be:
M1N2frontVillage-weaver_2008.zipImages of Southern-masked weaver nests -2008These are the raw images used in our texture analysis of weaverbird nests. 15 Southern Masked weavers (P. velatus) from Botswana (Atholl Holme 11-KO, Gaberone) photographed in November and December 2008. The filename indicates which male build the nest (M), which of that males nests the image is of (N) and which face of the nest the image is of (e.g. front). So an image of the front of Male 1’s, second nest would be: M1N2frontSouthern-masked-weaver_2008.zipImages of Southern-masked weaver nests- 2009These are the raw images used in our texture analysis of weaverbird nests. Images are of the completed nests of 7 Southern Masked weavers (P. velatus) from Botswana (Atholl Holme 11-KO, Gaberone) photographed in November and December 2009. The filename indicates which male build the nest (M), which of that males nests the image is of (N) and which face of the nest the image is of (e.g. front). So an image of the front of Male 1’s, second nest would be: M1N2frontSouthern-masked-weaver_2009.zip