Filters: Collection: "ir_uspace"
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| Creator | Title | Description | Subject | Date | ||
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Potts, Wayne K. | Emigration behavior of Clark's Nutcracker | Eruptive movements of the Clark's Nutcracker (Nucifraga columbiana) were observed during the late summer and fall of 1977, 1978 and 1979 in northern Utah and adjacent states. Over 2,000 emigrating nutcrackers were seen during these periods. Eruptions began in mid to late August, about the time nutcr... | Breeding range; Flocks; Observations | 1981 |
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