Abstract
The importance of grit in avian digestion has been recognized for at least two centuries (Spallanzani, 1783 [cited in Westerskov, 1965]). Grit is in the gizzards of most birds that eat plant parts (Meinertzhagen, 1964; Farner, 1960) and of many that eat invertebrates (Mayoh and Zach, 1986; Barrentine, 1980; Peterson and Ellarson, 1977; Jenkinson and Mengel, 1970; Barlow et al., 1963). Many studies have shown that, among avian species that use grit, most individuals have grit in their gizzards (Table I).
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Gionfriddo, J.P., Best, L.B. (1999). Grit Use by Birds. In: Nolan, V., Ketterson, E.D., Thompson, C.F. (eds) Current Ornithology. Current Ornithology, vol 15. Springer, Boston, MA. https://doi.org/10.1007/978-1-4757-4901-4_3
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