. Brigham Young University science bulletin. Biology -- Periodicals. Biological iliauEs, \'ol. IS, No. 3 Bul'.edinc; Ecology oi' Utah ll,-\rTons 59 P 1. Fig. 24. Great Horned Owl nest in West Canvon, March 1969. The nest was constructed the previous year bv Red-tailed Hawks. raptors, but the majority are Con- sequentlv, a few comparisons should suffice. Yearly Golden Eagle clutches on the study area averaged ± eggs. In a series of studies in Cahfornia Dixon (1937) reported av- erage clutches of eggs, Hanna () found an average clutch size of eggs, and Slev
. Brigham Young University science bulletin. Biology -- Periodicals. Biological iliauEs, \'ol. IS, No. 3 Bul'.edinc; Ecology oi' Utah ll,-\rTons 59 P 1. Fig. 24. Great Horned Owl nest in West Canvon, March 1969. The nest was constructed the previous year bv Red-tailed Hawks. raptors, but the majority are Con- sequentlv, a few comparisons should suffice. Yearly Golden Eagle clutches on the study area averaged ± eggs. In a series of studies in Cahfornia Dixon (1937) reported av- erage clutches of eggs, Hanna () found an average clutch size of eggs, and Slevin (1929) found an average clutch size of eggs for 21 clutches. In Scotland Gordon (1927) reported an average clutch size of eggs per clutch for 82 clutches. Jollie (1943) found eggs per clutch for five clutches in Colorado, and more recently McGahan (1968) recorded an average clutch size of eggs for 20 nests in Montana. Great Homed Owl clutches on the study area averaged ± eggs. Surprisingly, only a few studies are available for comparison. Craighead and Craighead (1956) reported aver- age clutch sizes of eggs in Michigan and eggs in Wyoming. Wolhuter (1969) reported an average clutch size of eggs for nine nests near Lawrence, Kansas, and Tyler and Saetveit (1969) reported average clutches of eggs for three nests in South Dakota and Iowa. In- terestingly, all are significantly lower than the av- erage Great Horned Gwl clutches of this area(t = for the Kansas comparison, t := for the South Dakota and Iowa comparison, and t = for the Wyoming area comparison). Insufficient comparative data is available on the average clutch size for Ferruginous Hawks. Red-tailed Hawk clutches on the study area averaged ± eggs. In Michigan, Craig- head and Craighead (1956) recorded average clutches of eggs, but in Wyoming an average of eggs per clutch was found. Elsewhere, Freemeyer (1966) found an average clutch size
Size: 1867px × 1339px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorbrighamyounguniversity, bookcentury1900, bookcollectio
