53 bicycles: A lateral thinking puzzle

Oh, thought of another one:
Has there been a relevant change in the population of any non-mammal animal?
(rabies only affects mammals, but some other animal might be relevant indirectly)

Does this refer to rabies in humans? Rabies in domestic animals? Rabies in wild animals?

I’ll break that into clear three answers:

  1. Humans? Yes.
  2. Domestic animals? No, I don’t think so.*
  3. Wild animals? Yes.

*Maybe, I have no info. on that. It’s possible.

Are the wild animals rats?

Are the wild animals drawn to cow dung?

No to both.

You appear to have missed some of mine:

kk

Are bats involved? Are snakes involved?

No to both.

Because of religious beliefs, have they stopped spreading any type of pesticides because it resulted in mosquito’s being killed?

OK, this is my first time participating in this thread, so I hope I’m doing this right…

Based on these two questions and answers:

Has there been a relevant increase in the population of some animal other than cows or humans? NO

Has there been a relevant change in the population of any non-mammal animal? YES

I’ll ask this question:

Has there been a relevant decrease in the population of any non-mammal animal?

NO

kk

Is the relevant non-mammal animal (or at least, one of them) a…
…bird?
…reptile?
…amphibian?
…fish?
…insect?
…non-insect invertebrate?

Is the relevant non-mammal animal (or at least one of them) a…
…predator…
…prey…
…parasite…
…commensalist symbiote…
to a mammal which is carrying rabies?

So, no to everything except “bird”.

If anyone would like to try and summarize what you know so far, I will happily correct it or comment on its accuracy.

Is the bird in question a scavenger? A vulture?
Is the bird in question a seed-eater? A parrot?

It’s a scavenger.

It’s vultures.

Is it something to do with sky burial?

So, if I’m following correctly, the vulture population is decreasing, and somehow this has led to an increase of rabies.

NO

YES, but a fuller explanation will be needed to solve it.