There’s been a lot of talk about a new study that claims “European starlings (Sturnus vulgaris) accurately recognize acoustic patterns defined by a recursive, self-embedding, context-free grammar.” I’m not competent to evaluate it (and have an admitted prejudice against the whole talking-animal thing), so I’ll send you to Mark Liberman for a thorough discussion of the merits of the study. Me, I’m just going to quote Yreka Bakery in the highly respected Speculative Grammarian:
An apparently new speech disorder a linguistics department our correspondent visited was affected by has appeared. Those affected our correspondent a local grad student called could hardly understand apparently still speak fluently. The cause experts the LSA sent investigate remains elusive. Frighteningly, linguists linguists linguists sent examined are highly contagious. Physicians neurologists psychologists other linguists called for help called for help called for help didn’t help either. The disorder experts reporters SpecGram sent consulted investigated apparently is a case of pathological center embedding.