1957 21 July Calypste anna all, and sometimes as many as 5-10 times, and in every case checked, this meant the nearby presence of another hummer, usually on the fruthana lush. In some instances this was a Calypste, mother a Selarphorus, but the territorial luhona was also seen. The O called, the intruder might then linger, usually leave without chase by the O. Occasionally chase occurred, sometimes winding around the fruthana trees with the intruder leaving only after some persistence in chase by the male. Chip-notes were given in flight then probably also from perches. That this deep note has been aggepstional significance was most clearly indicated by one act; an intruder appeared, the male beeped, then took a position many a foot above his perch giving four beeps about a second apart, then chased! On the 20th, there were several clashes between him and O I; the latter appearing when (though not on all occasions) there was activity near the fruthana