A photo-comparison of bleezes and flags in the blesbok versus the bontebok
(writing in progress)
The following photo-pair shows the two subspecies in posteriolateral view.
Both have a facial bleeze, that of the blesbok being proportionately larger owing to the difference in the relative sizes of the head.
The bontebok has an extremely well-developed pedal flag, whereas this individual of the blesbok, viewed in this perspective, lacks a pedal flag.
The pygal flag of the blesbok is replaced by a pygal bleeze in the bontebok.
In the blesbok, the abdominal and ulnar flags are separate, but in the bontebok there is a white ventral panel that subsumes both the abdominal and the ulnar pattern.
Bontebok
https://www.inaturalist.org/observations/130669553
POSTERIOLATERAL VIEW
Blesbok
https://www.inaturalist.org/observations/5141221 and https://www.inaturalist.org/observations/10924282
Blesbok
https://www.inaturalist.org/observations/31573500
Blesbok
https://www.inaturalist.org/observations/85742476
Blesbok
https://www.inaturalist.org/observations/7916986
Blesbok
https://www.inaturalist.org/observations/71536880
Adult male bontebok
https://www.inaturalist.org/observations/115575412
https://www.inaturalist.org/observations/110874507
(writing in progress)
For an index to my many Posts about the genus Damaliscus, please see https://www.inaturalist.org/journal/milewski/78238-an-index-to-my-posts-on-genus-damaliscus#.
Comentarios
Neither the blesbok nor the bontebok possesses a caudal flag, in contrast to the coexisting red hartebeest:
https://www.flickr.com/photos/colinthescot/9483000566/in/photolist-frYRFL-MdmiNW-bqFPz6-4dmLDN-2nmsCFN-2hTMyBo-2nVHAi5-4dmMMw-2nebUqa-2goN44U-2goNvc6-2kUxQR4-4dmMZS-25Ex5QA-p6aCRA-2hQfkAD-7TV1UR-V4E7DZ-2hSfrAk-PKmG8V-YYkeDg-8cdsKb-2KtjvS-8xnKrN-pxJ6q-KxWtKy-7TYfPu-4DP9n2-MU1Bub-daY6w9-UdwFcv-2kYpdWN-7PgBip-dt8gki-2iPJUN6-2jsBqyX-2jg3cmm-84ziXU-oGhA1T-z8RMkU-AFikPb-5DUcDf-5DPWaM-at6mq5-iM3Nm2-6TeDse-29Yu8yw-GQHdeu-QzVdjX-e6MgFY
https://www.flickr.com/photos/62181186@N08/50097064676/in/photolist-2jjUxYq-2hsDGV3-2hsGrgp-2iGfCyR-HfX4Cz-qtwsg8-ApjDMc-2jfZf6T-zEj283-qpGt6C-bt1qDP-dcWPMW-nQmxok-qFeiSy-2bW3UGB-2kYEqbH-qhpQqd-nQi3Db-qyMYL2-7kUsSb-dMomSG-3msyuZ-icJ1hv-96gBFL-6k47oq-uFrrMn-6MRxx1-vLgrwp-bzFBJX-bmLKoq-S62uKL-p9mdqt-dZ2rjF-UyW91q-bsvrgz-96db7M-dZ88V3-5CgHow-2hspDg2-228eSW3-23abstj-bRRs3p-eVd7dJ-2jjUxyH-21QFJP2-ahh6MB-2mDiXUv-Sown2n-9yZgSK-EfCHic
@tonyrebelo @paradoxornithidae
The following of the bontebok is a fair illustration of the relatively small head (compared to the blesbok), and an excellent illustration of the divulgence of advanced pregnancy by the white feature on the belly:
https://www.inaturalist.org/observations/97905171
Pregnancy is evident even in posterior view:
https://www.inaturalist.org/observations/68890585
Both the blesbok and the bontebok possess a facial bleeze.
However, I hypothesise that the facial bleeze of the blesbok is proportionately larger than that of the bontebok.
Furthermore, I hypothesise that the reason for this difference is that the head of the blesbok is proportionately larger than that of the bontebok.
If the ear pinnae of the blesbok and the bontebok have similar absolute sizes, then it should be possible to see, in suitably illuminated photos, that the ear pinnae of the blesbok are smaller, relative to the facial blaze, than that of the bontebok.
Dear Readers, please scrutinise the following photos to see whether the blesbok and the bontebok differ in the size of the ear pinnae relative to that of the main whitish patch on the face.
BLESBOK
https://www.inaturalist.org/observations/89697800
https://www.inaturalist.org/observations/103644334
https://www.inaturalist.org/observations/86025356
https://www.inaturalist.org/observations/80193154
https://www.inaturalist.org/observations/39219051
https://www.inaturalist.org/observations/36770861
https://www.inaturalist.org/observations/6436829
BONTEBOK
https://www.inaturalist.org/observations/137505998
https://www.inaturalist.org/observations/69061967
https://www.inaturalist.org/observations/67749842
https://www.inaturalist.org/observations/51830740
https://www.inaturalist.org/observations/55170710
https://www.inaturalist.org/observations/47826356
https://www.inaturalist.org/observations/32097081
Swishing of the tail vs insects, which I do not regard as indicative of a caudal flag:
https://www.inaturalist.org/observations/43411252
https://www.shutterstock.com/it/image-photo/san-diego-ca-usa-august-12-1733932481
https://stock.adobe.com/search?filters%5Bcontent_type%3Aphoto%5D=1&filters%5Bcontent_type%3Aillustration%5D=1&filters%5Bcontent_type%3Azip_vector%5D=1&filters%5Bcontent_type%3Avideo%5D=1&filters%5Bcontent_type%3Atemplate%5D=1&filters%5Bcontent_type%3A3d%5D=1&filters%5Bcontent_type%3Aaudio%5D=0&filters%5Binclude_stock_enterprise%5D=0&filters%5Bis_editorial%5D=0&filters%5Bfree_collection%5D=0&filters%5Bcontent_type%3Aimage%5D=1&k=damaliscus&order=relevance&safe_search=1&limit=100&search_page=14&search_type=pagination&get_facets=0&asset_id=14221217
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