Black Storm Petrel 
( Qceanodroma melania ) 
Total Observations - 83 
6 
Pronounced chip folio*™, these Mrds -uaXl^shoued^a^reaual^uildup 
astern during the day^ er a P^ ^ some miles passed pith only 
of the Gull Oi Californi , , p however, the birds were 
a single siehtlas ™ Coast ., = Pana^, howev^, ^ ^ merature> 
rifd^rinStf^gests ti me that when ^-eeding^opulation^eturns 
po P Sation1^ 0 r« d l ln fi n r°t-year birdh) remains in the southern end 
of the species range. 
Least Storm Petrel 
Halocyptena microsoma 
^pe^om 'petreisleerSfpanama'w as veil. 
Red-billed Tropicbird 
Total Observations - 6 
The six birds, scattered from the second to thy-m^day^indicate 
seLTnlonjITction ^“ge^flochs on 5 dune. Birds were 
heard calling at sea* 
Brown Booby 
Total Observations - 118 
The Brown was the first Booby to appear and high numbers were logged 
re ^ „ k c j une Many immatures, 50—y5 percent, 
when close to the coast on 4 aud 5 ' vpre foU nd riding turtles. After 
were seen in the Manx flocks, an o. “ Coa a t Rica and Panama 
a 700-mile absence, browns were again common oif Coa.t Kica 
where proportionally more adults were observed. 
Red-footed Booby 
Red-foots were first logged on 7 dune.^but were g^ese^o^ 
the sixth as well, off Acapulco. of non-adult birds. I did 
a 'Vreat many appeared. Most sightm 0 
'not°see any white adults to my knowledge. 
Blue-faced Booby 
Total Observations - 11 
Blue-faced Booby showed the same type of occurrence as the g * 
appearing ^disappearing in the same three-day span. Most sightings 
were of adulls. 
Frigatebird Species 
Total Observations - 28 
Only one bird was observed well e ^ sh ^^tpeS-^^The^irst 6 
Magnificent, however, all were p^^ica TweSy of the 28 birds were 
bird was sighted off northern Costa Rica. iwen y 
seen in the Qulf of Panama. 
