Bluebird: 1,283 Sq FtCrossbill: 1,318 Sq FtOriole: 1,320 Sq FtCardinal I: 1,325 Sq FtSaw-Whet Owl: 1,394 Sq FtWhippoorwill: 1,408 Sq FtScreech owl: 1,415 Sq FtWood duck: 1,440 Sq FtNightingale: 1,465 Sq FtSpotted owl: 1,495 Sq Ftsnowy owl I: 1,532 Sq FtSnowy owl II: 1,537 Sq FtPartridge: 1,550 Sq FtKingbird: 1,589 Sq Ftcardinal II: 1,618 Sq Fthawk i: 1,652 Sq Ftshort-eared owl: 1,661 Sq Ftmountain quail: 1,671 Sq Ftgoldfinch II: 1,734 Sq Fthawk owl: 1,750 Sq Ft