13 
flight, this frequency would certainly 'a*. v e neon touch more than 
four times the rate in normal flight. 
It v/j: 3 occasionally po-'slble to v tch the bir la during 
jart of It 
iicir aerial display and , before >r nf tar, on the nesting 
•jgwwiaA* 
cliff co that the connection between the .erinl end xoxfcfcKspc 
ssjfcscHic display could ~>itf cod bog. £ t';. cr, A fll : OvAfc coioiDonly 
V 
began suortly after e oair o&me together on i lodge, and when it 
was a" 1 ov*»r 
participants would re turn : • 1 p - 1* in the colony 
again. Sortie times the two mates would 1 a nd >n liffomnt ledges, but 
if this happened one of the ri often star tel to - bridle and the other 
would fly to it and the >f lr would stand together again .pictly.- 
Parental care, Sent: vl our of the young . 
' .P —.JB — . .... .. ^ I. Mil- «M. *-««*• «»** ••*. <ty«W«Wfc^W 
*» rtAt«JUi***2 sepofbA, 
a invl e e,-;": l..' Pro Tel by hot t eo<e, ,j > s in ' •. e r ■■^•riase, 
V # •** _ a ^ Mk 
JU 
third by 
There y re two Pro >d pa tehee , ■ u • puv 'irri/o 1 3 RfjKXXtxix^ t<i * ••''■retie 
Tern :<nd *..*r,y gulls is absent. C*A>kf ***•+> 
The down of the ysratiwi chicks gives the • .-a appearance very 
•e their parent#. • ill over esee t 
While most of the chiokf of 
0 u : • « tol 1 1 a s e r < r. 1 :: 0 d c rk , a 
1 pro oertion st 1 * * * * * ® 81. roost tfUitoj out I & # ft® - ■ 11p>U t cli^c^s 
awe a. j tho Black lioljies. 
Taa juveniles are even mere like Vv~ -culte and vest easily 
distinguished by their shorter bosks (Fig. 1C). 
The young are fed by regurgitation, li' there ol 
A.stoUdua (Watsonj. When begging for food th< young pock at the 
Si mmc svOKM.~i 4 m.lu 
bos 
v of their- parents. Tho feathered young wiVidtrv? the neck, tilt 
the body 
forwards and utter a >l c lntlve 1 pie 7 col l every a oond 
or two. dtaa Her young 1 ?o end ■?•? o v , but the hunened .oeture Is 
