A multi-yr analyze executed on San Joaquin Experimental Range in California, seemingly continue to the premier food items examine to date performed for crimson-tailed hawks with 4031 things examined, showed that all over the seasons the 722 g (1.592 lb) California floor squirrel (Otospermophilus beecheyi) was the most major prey, accounting for 60.8% of the breeding period diet and about 27.2% of the diet regime for hawks year-all around.