Apparently birds are capable of learning ringtones.  According to German ornithologists, Birds are capable of learning up to 78 different songs.  And Since birds mimic the sounds of the environment, some have started to mimic ringtones.

So last week we had ringtones that only dogs can hear, and now we have birds trying to throw us off by mocking the most common ringtones.

I think, as a society, we need to step back an re-evaluate our situation when last week we were affecting animals with our ringtones on purpose and now this week it comes out that we are also doing it by accident.

There hasn't been any word yet whether or not this has had any real impact on the birds.  Even though birds sing for utility and not just to make pretty sounds I would guess that the birds, considering that they don't really get that they mimicking ringtones, are not all that worried about it.