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The joint you are thinking (I assume) of is not a knee, nor is it an elbow, instead it is an ankle which is bending the same way as us humans. You can see from the below diagram that the knee - the joint between the femur and tibia - is just further up the leg normally hidden by feathers. Birds have a comparatively elongated metatarsus which gives the ...


It seems like they are not affected by fluorescent light frequency. I did not find anything about their visual sampling rate. Their hearing is between 0-200Hz with an average of 86Hz so I guess the visual sampling rate is under this, but that's just a guess. We conclude that at the illumination levels used in this experiment, the hens did not perceive ...


Birds can easily cover enough distance flying that they can avoid short showers entirely by not sitting right below clouds, unless they have an actual reason to stick around. Birds move around a lot more than we do.


Based on some external advice, I believe it might be a juvenile night heron (Nycticorax nycticorax), the only remaining question being why I didn't see any adults. Link to Google Image search results Update: I went back to the same location today and saw some adult night herons, which convinced me that these were juveniles of the same species.


Judging from the general habitus and neck length I'd say it is a bittern (Botaurus or Ixobrychus). I think, the combination of the coloration pattern and appearance in China points at (female) Schrenck's bittern.


I'd go with juvenile striated heron. I ruled out others such as the chinese pond heron because of the spotted wing plumage and slightly different shape of the patch around the eye. The night heron seems to have a more red eye than the striated heron and appears to have a stubbier beak. Arkive is a good place to see a lot of pictures of birds, this is a good ...

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