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Huge Spreadsheet of Eaglet Dates
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The wing feathers of one of the eaglets (probably the older one) did not develop normally; it was still able to fledge

before
April 12

Mar 18

can't see if more

April 23
(36 days)

~April 26
(seen May 1)

July 26
(94 days - 13.5 weeks)

August 1
early morning
(97 days - almost 14 weeks)

July 29
(on a nearby roof downhill from the nest)

August 7
(at nest after several days away)

Younger fell out of nest, rescued by O.W.L.

first year on cam

before cam activated

May 5

May 7

August 2
(89 days - 12 weeks, 5 days)

younger fell out of nest 8:20 pm July 22;
rehabbed at O.W.L. and released from there August 28
(16 weeks)

the nest was beginning to crumble by the time the eaglets fledged; an eaglet likely to be the older was seen in the area for a while but not seen in the nest again

 

Mar 24
Mar 28

none

 

 

Mar 12
Mar 15

maybe by Mar 22 - can't see one in nest, but adults not seen at the same time

update:
hatch dates suggest first egg was laid ~March 15

maybe April 20 & April 23 & April 25

July 6
(77 days - 11 weeks for oldest)

July 10
(78 days)

July 16
(82 days)

 

 

before Mar 3

can't see if more

~ April 4 & April 5

nest failed - IWS crew found chick dead and other missing April 23 - may be due to territorial interactions with other eagles

female A-04 subsequently found dead - likely as result of fight with intruder

 

 

new couple

(Dr. Sharpe built them a nest as they didn't seem too capable in that department - link)

none

 

 

Both eaglets injured May 19 in an attack by a juvenile:
details below

Mar 5
Mar 8

Feb 24 1:29 pm

Feb 27 5:00 pm

April 1 7:15 am
(37 days)

probably
April 2 4:15 pm
(35 days)
(but confirmed sighting April 3 & that's what CHIL is using so I'll use it as well)

July 17
morning
(107 days - had to wait for broken wing to heal)

July 1
afternoon
(89 days)

younger A-64
still on Santa Cruz as of March 2009

older A-65
died August 8
(18.5 weeks)
drowned tangled in kelp bed

 

~ Feb 23
~ Feb 25

on or before Feb 23

Feb 24 (late) or
Feb 25 (early)

March 30/31
(~37 days)

April 2
(~37 days)

both seen "branching" on June 18 and fledged by June 25
(~12 weeks)

younger K-70
still on Catalina
as of Mar 2009

older K-71
died July 24
(16.5 weeks)
probably starved

new pair

Feb 22 morning
first egg gone 2/23

Feb 24
second egg gone 3/8

 

 

~ Mar 3
~ Mar 5

Feb 27 5:30 pm

Mar 2
seen 6:36 am

broken egg removed from nest Mar 15 ~ 4:00 pm

April 5 7:13 am
(38 days if #1,
34 days if #2)

late June 26 or early June 27 (82-83 days)

last seen at nest August 31
(21 weeks)

died
October 24
(almost 29 weeks)
probable drowning; found in water off San Diego

 

new pair

already incubating
when nest found

did not hatch - removed from nest April 23 for testing by IWS

 

K-88 was seen in southwest Oregon in early November

~ Feb 26
~Mar 1

on or before Feb 26

can't see if more

April 5 (39 days from Feb 26)

~April 7
(seen Apr 30)

both fledged by July 2
(~12.5 weeks)

K-88
sighted on mainland
August 19
(19.5 weeks); seen on Catalina Mar 2009

K-89 died
~Sept 6
(almost 22 weeks)
trying to fly to mainland

Feb 27
~ Mar 2

Feb 22 ~ 4:45 pm
Feb 26 ~ 9:18 am

eggs removed for incubation Feb 28

older egg died
Mar 31

younger egg hatched Apr 2 10:52 am
(36 days)

June 21, 4:56 pm
(80 days -
11 weeks, 3 days)

K-83 was last seen at the nest Sept 3 (22 weeks) and on Catalina Oct 18 (28.5 weeks);
seen on San Clemente Oct 2008

 

Feb 20
Feb 23
Feb 25
Feb 27
?

maybe Mar 6 morning

maybe Mar 9

eggs removed for incubation Mar 14
(est 6 days old when removed)

younger egg died
Mar 29

3rd egg apparently laid ~Mar 14

April 15 8:28 pm
(40 days)
(hatching took over 53 hours - up to 36 is normal; assistance finally needed to break chick out of shell - it was out of position for hatching

April 18 9:53 am
(35 days)
(first natural hatch ever for this pair)

July 11
2:15 pm
(14 min first flight)
(87 days)

July 11
3:33 pm
(both eaglets chased off nest by low-flying plane)
(84 days)

both eaglets still in the nest area in mid August (18 weeks)

K-67
still on Catalina as of end of October; seen on Santa Cruz Mar 2009;
on Catalina
Mar 2010

August 23
K-65's signal coming from mainland
(18.5 weeks old)

Mar 3?
Mar 6

Feb 26-27 (at night or early morning)

Feb 29 - Mar 1 (at night or early morning)

Mar 4

April 4 12:25 pm
(37 days)

April 6, 7:36 am (36 days)

April 9 7:02 pm (36 days)

hard to tell from cam angle, but I think all 3 fledged by June 25 - July 2 (~ 12 weeks)

all 3 seen July 10;
2 seen July 25;
1 seen August 10
(~18 weeks old)

late November?
(cam was down)

December 26
(first seen Jan 6)

~ December 28
(first seen Jan 8)

March 19?
(84 days - 12 weeks)

March 11
(74 days -
10.5 weeks)

Both together
April 23
(117 days - 16.5 weeks)

one alone
May 11
(137 days - 19.5 weeks)

beginning around December 2 based on behavior of parents

January 8
(37 days)
first seen Jan 22

may have been 2nd chick lost while cam down

maybe fledged March 25 (77 days - 11 weeks old)
away from the nest all day

May 13
(126 days - 18 weeks)

beginning around December 7 based on behavior of parents

January 11 or 12
(36-37 days)
first seen Jan 18

~ January 14
first seen Jan 21

April 1 9:05 am
(81 days)

April 2 7:26 am
(~79 days)

May 21
(131 days - almost 19 weeks)

May 25

Mar 5
Mar 8

none

 

Jan 24
Jan 26

January 26 3:50 pm

January 30
before 6:56 am

March 3 5:37 pm
(37 days)

March 5 6:33 am
(35 days)

by May 26
(84 days - 12 weeks)

by June 9
(96 days - almost 14 weeks)

both seen July 1
(17 weeks)

The dead and somewhat rotten tree holding the nest collapsed in a storm July 27; both adults and the fledgling are fine

Feb 28
Mar 3

Feb 28-29 (at night)

Mar 2-3 (at night)

Mar 5-6 (at night)

April 9 8:35 am
(40 days for #1,
37 days for #2)

April 11 5:57 am
(39 days for #2,
36 days for #3)
died April 14

remaining egg
(probably #1)
did not hatch

July 5
morning
(87 days - 12.5 weeks)

last seen on cam July 27, just before nest tree collapsed; last seen in the area August 18 (not sure if local observers were able to check after that)

 

didn't watch last year

two eggs seen March 19

~April 25

~April 27

(two eaglets seen April 27)

~July 15
(81 days - 11.5 weeks)

~July 20
(84 days - 12 weeks)

(hard to tell from camera angle)

both seen Aug 13
(15.5 weeks)

one seen Aug 27
(17.5 weeks)

 

didn't watch last year

Feb 1

~Feb 3

~Feb 5

~Feb 7

March 11?
(39 days for #1)

March 12?

cam down March 14 - April 16; only two eaglets seen for sure before cam went down and only two when cam returned

May 26
morning
(76 days)

June 2
7:40 am
(82 days)

both seen June 17
(~ 98 days)

one seen June 24
(105 days)

cam down shortly thereafter

didn't watch last year

April 19
6:35 am

parents driven off nest May 11; egg abandoned

didn't watch last year

before April 2

May 8

June 24 removed from nest for transfer to hacking tower (age 6-1/2 weeks)

released
August 25
(109 days - 15.5 weeks)

last seen in area August 27
(almost 16 weeks)

First clutch laid Feb 1, 3 & 8; removed Feb 19 after nest temporarily abandoned; second clutch laid Mar 16, 19 & 22; first 2 eggs of second clutch lost Mar 21

Jan 31
Feb 3
Feb 7

March 22
12:20 pm

April 27
3:38 pm
(36 days);
removed from nest May 22 for treatment of avian pox

still in rehab

Mar 23
Mar 26

none - nest collapsed at end of last season; they are slowly rebuilding

 

 

First chick may have hatched two days earlier - view of nest bowl obscured by tree

first year with cam

before April 2

seen April 26
8:32 am

~April 29
(seen May 1)
died ~June 28
(60 days)

July 10
(75 days old)

August 13
(15.5 weeks old)

Feb 6?
Feb 9?
Feb 12

before
Feb 4 9:17 am
(cam was down)

Feb 6 8:00 pm

February 10 5:30 am

March 13
2:39 am

March 14
7:25 am

March 17
6:52 am

June 4
(83 days if oldest)

June 5
(83 days if middle)

June 12
(87 days if youngest)

3 seen July 2 (~15.5 weeks); 2 seen July 13 (~17 weeks); 1 sighted in area a week or so later