Koford Cuculidae Crotophaga ani October 23,1956 Barro Colorado Is., C.Z. About 9 a.m. 5 in low shrubs 50yds. SE of New Lab.; calling much. Perhaps feeding on grubs in old log. Saw about same number in vicinity about Oct. 20, but not previously noted (since July 1 or earlier). October 30,1956 again saw about 5 near Angu Malino I. November 6,1956. Saw 4 new in trees near Allee stream below Bay's House. November 13,1956. About 5 in shrubs on Stothia Island at 3 p.m. December 22,1956. Heard mr. Chapman House Dec January 1,1957. Several on wires near Allee Creek below Bay's House. 15 January 1957 Saw 1 or 2 real twins during day, & heard, near Kitchen & Allee House. 24 January 1957 A few near Chapman House & 1952 Lab. 21 April 1957 Flush of 8+ near Donato O.