i dreamt the word mata over and over again - in the end it was written on the front porch step

mata = bush
matar = to kill
Kill the cockroach!  Mata la cucaracha!
the most convincing meaning of Mexican-Spanish mata, 'a group of trees in the middle of a prairie', is found in southern Mexico
A group of crows is called a "murder." There are several different explanations for the origin of this term, mostly based on old folk tales and superstitions. For instance, there is a folktale that crows will gather and decide the capital fate of another crow.
Many view the appearance of crows as an omen of death.  The term "murder of crows" reflects a time when groupings of animals had colorful and poetic names.  Other group names include:  an ostentation of peacocks, a parliament of owls, an army of frogs, a murmuration of starlings, and a skulk of foxes.