Current Barrons Article mentions Boston Properties is doing a special dividend. Property prices are so extended that some REITs refuse to buy properties at these prices. If cann't do 1031 exchange because cann't find reasonably priced properties to buy, special dividend becomes a reasonable alternative.
Barron's article general tone is that REITs are overpriced, but other buyers of properties are still buying and driving up property prices further.
IMHO, not a great time to be buying REITs, but not neccesarily a good idea to sell since sale would involve a lot of taxes due for any long term holder.