. Brigham Young University science bulletin. Biology -- Periodicals. Biological Series, Vol. 18, No. 1 Peregrine Falcon in Utah 11 y=.38l+(). Fig. 11. Linear regression analysis of the number of Peregrine Falcons recorded per party hour, during Christ- mas bird counts at the Bear River Migratory Waterfowl Refuge between 1939 and 1970. Each circle represents the observations for one Christmas bird count. Downward trend is statistically significant (p<). This analysis suggests that the peregrine had essentially disappeared as a wintering bird in the Bear River marshes by Plea
. Brigham Young University science bulletin. Biology -- Periodicals. Biological Series, Vol. 18, No. 1 Peregrine Falcon in Utah 11 y=.38l+(). Fig. 11. Linear regression analysis of the number of Peregrine Falcons recorded per party hour, during Christ- mas bird counts at the Bear River Migratory Waterfowl Refuge between 1939 and 1970. Each circle represents the observations for one Christmas bird count. Downward trend is statistically significant (p<). This analysis suggests that the peregrine had essentially disappeared as a wintering bird in the Bear River marshes by Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Brigham Young University. Provo, Utah : Brigham Young University
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