2.5 was "barking", she knew there was an owl lurking nearby

WHY was she "Barking" on the railing next to the house I wondered? Something was wrong for sure. . . . 2.5 Homer Pigeon saw what I could not. I dismissed it.
Later a neighbor called to alert me that there was a Great Horned Owl near our back fence. 2.5 knew she should not fly to the Aviary. The Chickens were unsuspecting and in the yard as usual.
2.5 is So smart and intelligent... later, she did make her way safely to the aviary.... All is well, no birds lost. No birds loose tomorrow though.