birddiversityandhabitat(文件)
【正文】 rains such as corn, millet, rye, barley, and oats. ? On rare occassions, doves can also be seen preying on grasshoppers, ants, beetles, and snails. Passer domesticus (House Sparrow) ? Habitat ? House Sparrows like areas that have been modified by humans, including farms, residential, and urban areas. They are absent from uninhabited woodlands, deserts, forests, and grasslands. ? Diet ? House Sparrows forage on the ground, eating a variety of seeds and grains, sometimes obtained from livestock feed or livestock droppings. They also eat insects, spiders, and fruits in the summer. Road Runner ? Habitat ? desert scrub, chaparral, arid open woodland, brush ? Diet ? consists mostly of animals (insects, reptiles, rodents, birds, etc.), but will occasionally eat fruit (mostly from cactus) and seeds. Data Collected ? U of A ? Sparrow – 81 ? Pigeon – 19 ? Catalina Mountains ? Mourning Dove – 48 ? Sparrow – 12 ? Cactus Wren – 7 ? Quail – 27 ? Road Runner – 2 ? Pigeon – 4 Bar Graph of Bird Count Results B i r d Co u n t v s S p e c i e s0810 0 0194812727240102030405060708090M o u r n i n gD o v eS p a r r o w C a c t u s W r e n Q u a i l R o a d R u n n e r P i g e o nS p e c i e sBird CountU o f A B i r d sC a t a l i n a B i r d sCalculations: Using Inference on Proportions for Two Independent Samples Ztest ? State Hypothesis ? Ho : p1 = p2 ? Ha : p1 p2 ? Find Test Statis
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