I think this was a mix of blackbirds and swifts?
An endangered bird endemic to San Clemente Island, the San Clemente Loggerhead Shrike preys on a formerly endangered reptile endemic to the California Channel Islands, the Island Night Lizard (Xantusia riversiana). The shrike caught this lizard, gave the tail to his mate as a courtship gift, ate most of the body, and cached the head for later.