Breeding schedule.—Fifty-seven records of egg-laying span the period January 11 to March 20 ([Fig. 4]); the modal date for laying is near February 10.
Number of eggs.—Clutch-size is 2 eggs (2.4, 2-3; 22).
Nests are placed about 30 feet high in cottonwood, elm, osage orange, hackberry, juniper, locust, cliffsides, and buildings of man. Old nests of hawks, crows, and herons are frequently appropriated.
Burrowing Owl: Speotyto cunicularia hypugaea (Bonaparte).—This is an uncommon summer resident in western Kansas in grassland and open scrub habitats. Stations of breeding all come from west of a line running through Cloud and Barber counties. Arrival in spring is between March 22 and April 17 (the median for 7 records is April 9), and dates last seen in autumn span the period September 8 to November 14 (the median for 9 records is September 26).
Breeding schedule.—Twenty-one records of egg-laying run from April 11 to July 10 ([Fig. 4]); the mode of laying is May 15.
Number of eggs.—Clutch-size is 7 or 8 eggs.
Nests are informal aggregations of plant and animal fibers in chambers of earthen burrows usually made by badgers or prairie dogs.
Barred Owl: Strix varia varia Barton.—This is a local resident in eastern Kansas, in heavy woodland. The species is said by implication (A. O. U. Check-list, 1957) to occur in western Kansas, but no good breeding records are available, all such records coming from and east of Morris County. Specimens from southeastern Kansas show morphologic intergradation with characters of S. v. georgica Latham.
Breeding schedule.—Three records of egg-laying are for the first half of March.
Number of eggs.—Clutch-size in our sample is 2 eggs.