HOWLAND 
■breeding data 
- % 
0 ) 
LESSER FRI&Ai’EBIRD 
March 19 , 1963 — Wirtz: n ....on the northeast beach is a. flock of several 
thousand immature frigates, but I have only seen about 200 
adults on the island, and these usually roost in the dead trees 
behind the lighthouse. ,s Wirtz has confused greater and lesser 
frigates here - immatures are lesser and the ones roosting in 
the trees are mostly if not all greaters. 
GO 
July 5, 1963 --Sibley: "Mike and I then went to find large roosting colony 
of irigatebirds. finally found it and rushed in to catch birds 
before they flew. After catching one I noticed that I was standing 
on an egg. Also the ground was littered with eggs.....After 
identifying them as lesser ^rigatebirds and estimating the 
colony at 4500-5000 we went back to check on Feter.” 
"Lesser Frigatebirds — males all with pouches inflated...” 
July 5-3» 1963 — Sibley 2 Resting colony of 4500-5009on HE edge. Tightly 
packed. Almost wing to wing. Egg directly on ground or with a 
little grass. Eggs evidently all newly laid. (Few broken were 
fresh).Small number of immatures flying around.” 
(*> 
LESSER FRIGATES IAD 
a* 
July 6-8, 1963 —— Sibley: "White flank spots on male and this plus black 
throat in female were easily spotted in field. Small numbers of 
immatures flying around. 4 adults banded." 
( 5 ) 
October 9-14, 1963 
Sibley: Estimated 40 birds, hone seen except in air. 
ormer nest site now empty. 
October 18, 1963 - Sibley: "After dark went out and collected 5 greater ai 
lesser frigates for blood. Killed the Lesser Frigate for 
n clr ; m M 
