Geology topics
Research about Tucson, Arizona
Source-linked reports with geographic coverage including Tucson, Arizona.
Map showing distribution of recoverable ground water in the Tucson area, Arizona
No abstract available.
Breeding behavior of immature mourning doves
Some immature mourning doves ( Zenaidura macroura ) are capable of breeding in their first (calendar) year of life. The breeding activities of immatures observed in this study included calling, copulating, and nesting. Development of sexual structures such as cloacal papillae, oviduct openings, and gonads was also regarded as evidence of breeding potential. Immatures were identified principally by white-tipped wing coverts. Sexes were distinguished by behavioral characteristics. Males coo, perform flights, carry nest material, and attend nests during the day and females attend nests at night. Immatures were involved in at least ten nestings on two areas near Tucson, Arizona, in 1963. Five young fledged from these nests.