Davis 1941. 24 N slope hut, Cacaguatigue, 4600', Def't Morazon, El Salvador Dec. 29, 1941. Looking for the owl, unsuccessfully. Consequently Got off to a late start. Took a walk west of camp to a grove of bushed-out oak forest, and shot an Adult ♂ Piculus rubiginosus (982) from about 30' up in an oak tree. A few minutes later I took an immature ♂ Myiarchus tuberculifer from about 20' up in an oak a scant 30 yds. from the tree where I shot the woodpecker. Both birds were silent. Heard 2 Guatemala Ivory-billed woodpeckers at work. They have a definite rhythm, a double beat that sounds like 2 shots from an automatic rifle, then a pause, double-beat, pause, etc. This dis- distinguishes them from the ivory-billed pileated woodpeckers, which seem to have no regular rhythm, too much softer blow. Returned to camp and skinned. Hunted after lunch. Shot an adult ♂ Monodus lessoni (983) from a coffee-brush a few yards within a grove. This bird has a predilection for cool, dark places, is usually silent. At times it gives vent to an owl-like hoot; broken flight moves the tail in an arc — like the pendulum of a clock. Took an adult Hylocharis leucotis as it fed from a patch of red Gentianum-like flowers about 2' above the ground by the side of the trail. Reached the ridge and turned back down the trail. Noticed an absence of Collared Swifts