Koford 1956 1957 Icteridae Zarynchus wagleri July 10, 1956 Barro Colorado Is., Canal Zone Eugene Esermann pointed out to me that 6 nests in tall tree 50yds. NW of New Lab were being used by oropendula. This apparently late date of record for young in nest. July 25, 1956 No observations extensive but saw more at nests today (in Ceiba 100yds W. of New Lab). One in Cecropia over Barlow House in evening. //Later saw 2 nests entered. August 2, 1956 Saw one enter nest at elatins, one perched aside nest. August 11, 1956. None seen in area of this tree (the change in fruiting may have had effect on distribution.). December 23, 1956. Barely seen a head lately, but this mornng one called in balsa 5. of Chapman House, flew to Schizolobium, min, again called- bubbling sound. January 4, 1957 About 7:30 a.m. heard near balsa 5. of Chapman House. 5 flew across to W. to an almandra, perched, 4 soon flew to N. early 2 more flew direct from balsa to join them. Mort seen since August. January 13, 1957. About 7:15 a.m. saw 7 in jacaranda over Test Table Bldg. Deep gurgling call. Flew to N. Not appear- ext rest of day. 22 January 1957. Saw + head one at WNW & 1/2. Mr. Lester says he saw one there during last four days. I heard a few at midday about 100yds. NW of Test Table Bldg. 23 January 1957. Mr. Reusing said he thought one was trying to start nest in Schizolobium over Test Table Bldg. at end of branch with new foliage. Heard in area 100yds. NW of kitchen during day. One calling from balsa 5. of Chapman House about 4 p.m.