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<br />C<J,f,,,,, M!lWffillll GniJrn &n,I, COktlJhll' Sk,""'ar\' Rtf.ort
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<br />hnUIIO'"
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<br />Bused on our obser\';,tions. incullatioll was initiuted tin 20 February, On tl1is da}'. we first
<br />"l:>scT'\'cd the fl:mak sil1in~ low nn the nlKt for an extended p:ri..d (If lime. After this moniwring
<br />day. holh ;,dults were observed si"in~ ]ow 1m the nest. and this IIcti\'il~ continued Ulllilthc first
<br />h"t~h dale. ] Aprill",fcr III Nestling M'ctillfl ofrcportl. Fm this rcr'11rt, we consider 31 March
<br />the I-rllt (If the incubation 1'ha.\C because Ollha! lime we did notl;.now if there' was more thun (l!K'
<br />egg in the ncsl. [)uring the incubalion phasc 120 Fcb,.31 Mar.),wcnbscT'\cd the gllldrn wglcsa
<br />totlll of 50.75 hours on ]5 JitTerent lilly'S. Th~"'c were approximately 500 ooun of daylight
<br />during the 41-du}' m<lnilOrinll JX'riod. Thus we nbscr.'cd the ellgles ilf1rrO"'lInlllc1~ 10";' of the
<br />DI'Dilal>le hnursand 34% (Iflhe a\'ailnhle days.
<br />
<br />J'r"p""j"" "/'nfllhafi,m !>.I'Malt' altd Ft'lflalt'
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<br />On each mnnilnring da)'. we ohscr'o'ed Ii'll,' female in IheneSI in Ii'll,' ineuoolingposlure.
<br />"hill,' Ih... ma1e "a,uho;erved 1I1cuhaling<'nly 6 uflh... 15 (40%) mnniluring day,. O\"o:ral1.lhe
<br />female perf"rmed %~'. (41.3 hours) and Ihe male onl)' 4%(1,6 huurs) nflhe iIKUDatiun. Two
<br />"ddilionalhnursofincuhalionwereohser'oeddurin~oneoflhcohscr\"alinodll),s....ithnnewgle
<br />siuingon Ihe ncsl fOIl,: hoursfollnw...dt>ythcS<.~I'nd caBlesining forO,g IxHltli. Duringthis
<br />t1l11... po:riud,hv.......wr. gender oflh'" c3g1es....a. unllh1e In hedetermincd h)' lheubservo:r, During
<br />the illcuhiltil'll pha'IC. lhc:n: wcre sh<,'I1. inteTlnlllent time periods "'m:n neitho:r aduh Wi"
<br />incuh<lling. ~'ost of these 'Nlsi'led of < 10.mlllul... inlcrvals when neilher adult was oh""rved
<br />im;uhaling, The nest \\11.. left Ullallended fllt mt\re than lO minules on Ibre... occasions. one of
<br />....hichla_te..l20minutes.
<br />
<br />F,,,,Jr""i,~'rjt',\
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<br />1m: malc "as nhloCt\,...d hringin[/. food In the female on the nest on five different
<br />mnnilnnng Ja)'s; h<'''e'l'cr. lI'e SIll'.' the male IlUntinl:! in RidlO"" Basin on onl) one oo;caSilffi, On
<br />nnc "ther m"nit<'ring day', Ihc female c!luld ~ wen eating il15idc tm: nesl. hul no f..od delivery
<br />"'a' "I>~cr'o'cd, TIle male may' h;1\'e hrnught food h> the n~l prim 10 the ('ns...l (,f the da~"s
<br />munilOrin~pt:nod,
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<br />C"fu1a,i",.
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<br />(luring the incuhalion pha<,C, ubscr'o'crs documcnted copulllhon hy the engles on one
<br />mllniwrinl! Ja)'. This cnpulmil\o evcnt l....nme..l un::!5 Feh"jusl II fe.... days after iniliatiun of
<br />incubation.
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<br />C,,,,",ut-/i,m.-lrli.,;/;t'la"dHlalfC/ft'cf,1
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<br />Fcnsphere hivl"g1SlSohscrvcd Ihe foll<1wing "'n~tT1Jclilln acti\'ities during lhe incu"atiun
<br />nlnnitorinl!pcriotl'cunstruetwn at thed"m sill,'. n:lCnlinnpond. and archclllogicnl sitesal the
<br />t>;1.<C (lfCarhun \.l"unlalll: truck and hell\')' equipment lraffic along the haul road: dep"sil1l1g
<br />gravel in the 101 adjacent to the pipcprtl; and ~urfacc 1>1...,tin[/. al and dO"l1~m:am from lhe dam
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<br />&.silrJHr,r.m"'on"""ldlSrn',uJ
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