72 429 1892. Oct. 15 Black-chinned Humming bird Trochilus alexandri There is one staying in our yard very bold would fly & suspend itself within 10in of me. There's another hummer & around but he drives her away. Top of bill at base "gold-mounted." Whole belly covered slightly with green. white strip below gorget which is on throat + sides of head. Top of head darker than the back! 430 1891 5/30 Costae's Humming bird Trochilus costae = Calypte costae Took 2 sets in Sycamore, both in sycamore trees. 1893 4/29 A ? Costae flew into our sitting-room and flew around till she got tired, when I caught her & let her out. 4/29 Took a set of two. set #1.