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l?Iar., 1910 EFFECT OF ENEMIES ON NESTING HABITS OF HONDURAS BIRDS 59 colonie? permits of such a choice, ?[yiozeletesand Legalus invariably and even Pitangus occasionally build their nests in one of the small acacias with hollow thorns inhabited by stinging ants; it is, therefore, not unusual to see the nests of two or three species of flycatchers in a single small tree. A few words may be added here regarding the relation of ants to the nesting habits of British Honduras birds. In several instances referred totheir presence is employed by the birds as a means of defence from larger enemies, but they are by no means always beneficial. The writer once found a nest of Myiarc?u$ Fig. 20. NEST OF THE CINNAMON BECARD, P.4CIg}'RIg.4)I?PHUS Cl.X?al.4 ,$'IO,?$'Ib. U.S' mexicanus containing a newly hatcht bird just breathing its last and covered with small red stinging ants that had evidently attackt it as their prey. Such cases are doubtless common. The fierce driver ants of the genus Ecilon, which move in vast hosts thru the forests, destroying every living creature that remains in their path, can not fail at times to come upon nests that are placed on or near the ground. These ants do not usually ascend far into the trees nor go out to the ends of long branches; it may be partly for this reason that some of the manikins and