This might not be the right place to post this question, but I'm hoping an answer will be here.
Attached is an image of a dead Riparia chinensis picked up as a roadside corpse. Can the sex of the bird be determined by the cloacal protuberance in this instance? It both looked and looks quite tubular, so I'm assuming it to be male.
(I haven't done the best of jobs of getting the feathers out of the way due to operating with only one hand in a strong wind, but the protuberance in question can be seen, I think).
Thanks in advance,
Steve
Attached is an image of a dead Riparia chinensis picked up as a roadside corpse. Can the sex of the bird be determined by the cloacal protuberance in this instance? It both looked and looks quite tubular, so I'm assuming it to be male.
(I haven't done the best of jobs of getting the feathers out of the way due to operating with only one hand in a strong wind, but the protuberance in question can be seen, I think).
Thanks in advance,
Steve