=========+===========+===========+===========+=========+========= | Number | | | Full | LOCATION | and sex | Wing | Tail | culmen | Tarsus ---------+-----------+-----------+-----------+---------+--------- Guam | 9 males | 236 | 165 | 55 | 51 | | (229-244) | (158-170) | (51-57) | (49-52) | 19 females| 227 | 151 | 50 | 50 | | (222-241) | (143-166) | (47-54) | (46-54) | | | | | Rota | 3 males | 235 | 167 | 54 | 50 | | (233-236) | (166-169) | (53-56) | (49-51) ---------+-----------+-----------+-----------+---------+--------- _Specimens examined._--Total number, 49 (20 males, 27 females, 2 unsexed), as follows: Mariana Islands, USNM--Guam, 26 (May 25, 29, June 4, 7, 8, 9, 18, 28, 29, July 10, 12, 18, Sept. 5, 11)--Rota, 4 (Oct. 22, 25, 29); AMNH--Guam, 19 (Jan., Feb., March, Aug., Sept., Dec.). _Nesting._--In the spring of 1945, the NAMRU2 party obtained records of nesting activities by crows. One nest was observed on March 8 in a banyan tree. Specimens collected from May to September were not in breeding condition, and it is thought that the nesting period is concentrated in the winter and spring months. Watson (1946:41) reports finding a young crow being fed on May 8 by an adult. _Molt._--The Marianas Crow molts in the period from May to August or September. Most of the birds taken by the NAMRU2 party in this period were in the process of molt. Skins obtained at Rota in late October also exhibit signs of molt. Specimens taken in December, January and February are in fresh or slightly worn plumage. The crow presents an exceedingly shabby appearance in molt, because the grayish and whitish basal parts of the feathers are exposed. _Food habits._--The crow is an omnivorous feeder. Stomachs examined contained both plant and animal food. Both Seale (1901:55) and Safford (1905:79) comment on the damage which the crow does to the corn crop at Guam. Seale remarks that the crow has a reputation for plundering nests of other birds. The NAMRU2 party saw crows being chased by starlings on several occasions. _Parasites._--Wharton (1946:174) obtained the chigger (Acarina), _Trombicula_ sp., from the crow at Guam.