Abstract
Bent (1968) summarized information available on the breeding biology of the House Finch (Carpodacus mexicanus). Although this species has been studied quite extensively in its North American home range, little attention has been paid to it in Hawaii. Grinnell (1911) reported on different color patterns of the House Finch in Hawaii, and Richardson and Bowles (1964) mentioned that on 23 June 1960 they found a nestling that had fallen from its nest on Kauai. On Mauna Kea, Berger (1972) found House Finch nests with eggs as early as 6 April (1968) and as late as 17 July (1967). Eleven nests were built on horizontal branches of mamane (Sophora chrysophylla) and two in naio (Myoporum sandwicense) trees. Complete clutches of three eggs were found in two nests, four eggs in five nests, and five eggs in one nest. only other reference I have found to the breeding aspects of the House Finch in Hawaii is that of Hirai (1974) who studied an urban House Finch population in Honolulu from 1972 through 1974. According to Caum (1933), the House Finch was introduced to Hawaii prior to 1870, probably having escaped from captivity. It is now established on all of the main Hawaiian islands. Berger (1972) wrote that The Linnet is common in cities and towns, in both wet and dry rural areas, and in the high ranch and forest lands on Maui and Hawaii. It is uncommon in the depths of the near-virgin rain forests, but it is abundant in the mamaninaio forests on Mauna Kea, as well as in partly cutover mixed ohia-koa forests.
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