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Robert C. Szaro, Martin D. Jakle, Avian Use of a Desert Riparian Island and Its Adjacent Scrub Habitat, The Condor: Ornithological Applications, Volume 87, Issue 4, November 1985, Pages 511–519, https://doi.org/10.2307/1367948
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Abstract
A riparian bird community in central Arizona contributed from 23 to 33% of the birds along the adjacent desert washes, and from 7 to 15% of the birds in the adjacent desert upland. Conversely, the desert bird community contributed only from 1 to 1.5% of the birds in the riparian island. Bird density ranged from 336 to 446 birds/40 ha in the riparian core and edge in 1981 and 1982. Bird density in the adjacent desert decreased with distance from the edge of the riparian island to a low of 101 birds/40 ha in 1981, to 137 birds/40 ha in 1982, in the segment 600 to 1,000 m from the riparian edge.