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Pigeon Guillemot Data : Whidbey : Reports

Lake Hancock North - 2015 - Cumulative Survey View

Summer 2015 - Cumulative Counts through 2015-08-15
Colony Wide Data click on any date to see its details
06-2006-2707-0407-1107-1807-18 ??07-2508-0108-0808-15

 counts per survey date
 
# adult PG47435848494953565365
vol hours9.0227.57.57.56.756.7510.07.5

  Observed Burrow Visits
Legend for Burrow Visits Graphical Display:
  • Each row represents one burrow.
  • Each survey-date is represented by two columns
    • (left) VB (observations of visits without prey),
      .. bar height represents # of visits to that burrow
      .. gray background => there was a visit to the burrow on this or a previous survey date
    • (right) FB ( observations of visits with prey).
      .. bar height represents # of prey delivered to that burrow
      .. blue background => there was a prey delivery to the burrow on this or a previous survey date
  • Color-coding of bars
      ( noprey)   ( sculpin)   ( gunnels)   ( other)
     
  • Hint: hover over any bar below to see the underlying data
burrow06-2006-2707-0407-1107-1807-18 ??07-2508-0108-0808-15
Burrow #10
Burrow #10: Larger of two holes at top of bluff to left of farthest north outcropping in north colony
Burrow #11
Burrow #11: Large hole near top of bluff just north of burrow #4
Burrow #12: crack near top of bluff on south side of outcropping that houses burrow #4 on the north side.
Burrow #14
Burrow #14: horizontal crack midway down bluff under burrow 11
Burrow #15
Burrow #15: crack on upper face of vertical outcropping beneath and south of burrow 4 and between burrows 14 and 2
Burrow #2
Burrow #2 midway down bluff on southernmost outcropping (where #14 is on north side)
Burrow #5: hole at top of bluff under large bush and midway between outcroppings
Burrow #8
Burrow #8 (Hole along southern vertical edge of northernmost outcropping in north colony, about midway down bluff.
Burrow#13: At far southern end of north colony, near top of bluff just south of large vertical crack and just north of tree leaning horizontally to the south.
Burrow#2
Burrow#3: Hole at top of bluff under left (north) side of large bush on top of bluff and 1/3 of way from north outcropping at burrow #6 and south outcropping at #4
Burrow#4
Burrow#5
South Burrow #S3: middle of 3 holes under lip of bluff above south (right) end of larger fallen log
South Burrow #S4
South Burrow #S7
South burrow #5
South burrow #6
South burrow #S3
South burrow #S7
burrow #12: hole at top of bluff on southern side of southern outcropping (south of #4)
burrow #4 (long vertical crack at northern edge of 2nd outcropping northern edge of north colony)
burrow south#5
dway down bluff just north of outcropping where burrow 4 is located above
south burrow #7: hole about 2 feet below top of blouff, just north of photo of south bluff and north of bulge in bluff
south burrow #S3
total

# of unique burrows visited

VB 5 1 3 3 2 5 12 1 - -
FB - 2 1 3 1 3 3 2 - -
Tot 5 2 4 5 2 6 13 2 - -

For survey notes below, show: entire note content OR just note title

2015-06-20 @ Lake Hancock North

Survey start time: 8:15 A, Observers: Mary Hulbert, Frances Wood, Claudia Mitchell, Tom McCullough, Betsy McCullough
adult PG count today: 47
total volunteer hours: 9.0
burrownopreysculpingunnelsother
Burrow #10 3 - - -
Burrow #11 3 - - -
Burrow #14 2 - - -
Burrow #8 5 - - -
Burrow#4 3 - - -
total 16 - - -

survey.note - Little activity at south colony and much activity at northern colony.

2015-06-27 @ Lake Hancock North

Survey start time: 8:30A, Observers: Tom McCullough, Betsy McCullough, Claudia Mitchell
adult PG count today: 43
total volunteer hours: 2
burrownopreysculpingunnelsother
Burrow #10 2 - 1 -
South burrow #5 - - 1 -
total 2 - 2 -

disturbance - None ( - ) ()

survey.note - Birds stayed in deeper water most of the time with little activity on the bluff. No identifiable disturbance. It was a very low tide.

2015-07-04 @ Lake Hancock North

Survey start time: 8:45 AM, Observers: Tom McCullough, Betsy McCullough, Claudia Mitchell
adult PG count today: 58
total volunteer hours: 2
burrownopreysculpingunnelsother
Burrow #10: Larger of two holes at top of bluff to left of farthest north outcropping in north colony - - 2 -
Burrow #11: Large hole near top of bluff just north of burrow #4 - - - -
Burrow #14: horizontal crack midway down bluff under burrow 11 - - - -
Burrow #5: hole at top of bluff under large bush and midway between outcroppings - - - -
Burrow #8 (Hole along southern vertical edge of northernmost outcropping in north colony, about midway down bluff. - - - -
South burrow #6 1 - - -
burrow #12: hole at top of bluff on southern side of southern outcropping (south of #4) - - - -
burrow #4 (long vertical crack at northern edge of 2nd outcropping northern edge of north colony) 1 - - -
burrow south#5 1 - - -
dway down bluff just north of outcropping where burrow 4 is located above - - - -
total 3 - 2 -

disturbance - eagle (9:10 A - ??) (flee bluff or beach) Only affected birds at south colony who flew out to deeper water and never returned before we left.

disturbance - fishing boat (8:40 A - 8:55A) () The birds did not seem particularly concerned but followed boat as it travelled north away from burrows. Birds gradually returned to the area near the burrows when the boat left the area.

survey.note - Birds were fairly far off the beach when we arrived and generally stayed offshore throughout with little activity towards bluff or burrows.They did not seem disturbed and dived for fish and billed with each other while on the water.

2015-07-11 @ Lake Hancock North

Survey start time: 8:15A, Observers: Tom McCullough, Betsy McCullough, Claudia Mitchell
adult PG count today: 48
total volunteer hours: 7.5
burrownopreysculpingunnelsother
Burrow #10 - - 1 -
Burrow #2 midway down bluff on southernmost outcropping (where #14 is on north side) 2 - - -
Burrow#4 1 - - -
South Burrow #S3: middle of 3 holes under lip of bluff above south (right) end of larger fallen log 1 - - 1
South burrow #6 - 2 - 1
total 4 2 1 2

disturbance - eagle (7:45 - 8:00) (flee bluff or beach) Occurred prior to survey start as we a ways down beach and were walking to stations. We saw an eagle flying along shore by bluff which then flew north over our heads. Guillemots had been on the bluff and close to shore and they scattered out to deep water. They stayed out further in the water but began a flurry of activity flying to and from the bluff at 8:00.

disturbance - eagle #2 (8:02 - 8:08) (fly off water) Eagle flew over shallower water and guillemots moved to even deeper water,after that eagle left area, guillemots began to fly touch and goes by 8:08--still before survey started and they continued to visit burrows on bluff until next disturbance at 8:22.

disturbance - eagle #3 (8:22 - ) (flee bluff or beach) Birds frantically scattered from our bluff. Claudia stated that two bald eagles perched near the southern colony at that time and her birds scattered also. At the northern colony, the whole flock began flying 10-12 circular passes near top of bluff--first with 16 birds in group for first few passes and gradually with 1-2 birds dropping out so there were only 7 birds flying in last few passes. This continued for several minutes before birds settled far out in the water.They gradually moved a little closer in by 8:30 but then flew back to deeper water at 8:33 and one of the perched eagles flew north over our section of beach at 8:35.Birds then very gradually began moving to shallower water with most birds returning to shallower water by 9:00 although they did not return to any flights to and from bluff. Although a few birds made touch and go visits after 9:00 and there was one fish delivery at the north colony at 8:49, birds at the north colony never returned to the level of activity present early in our survey. Birds near the southern burrows seemed to return to normal activity to and from the bluffs after about half an hour (around 8:50-9:00.)

disturbance - eagle #4 (9:09 - ?) () Eagle flew northwards over trees above bluff.Unclear if this eagle had been present and contributing to lack of visits to bluff earlier. Also, guillemots did not return to northern section of bluff for remainder of survey period.

survey.note - When we arrived at the bluff a little before 8:00, there was a lot of activity with a fish delivery to burrow #10 and possibly to #6 and #12 although I could not see if birds actually went inside those burrows.These were not counted because they occurred before the start of survey time but suggest that burrows #6 and 12 may be active.

2015-07-18 @ Lake Hancock North

Survey start time: 9:00, Observers: Tom McCullough, Betsy McCullough, Claudia Mitchell
adult PG count today: 49
total volunteer hours: 7.5
burrownopreysculpingunnelsother
Burrow #2 1 1 1 -
Burrow#5 1 - - -
total 2 1 1 -

2015-07-18 @ Lake Hancock North

Survey start time: 9:00, Observers: Tom McCullough, Betsy McCullough, Claudia Mitchell
adult PG count today: 49
total volunteer hours: 7.5
burrownopreysculpingunnelsother
Burrow #11 1 - 2 -
Burrow #15: crack on upper face of vertical outcropping beneath and south of burrow 4 and between burrows 14 and 2 1 - - -
Burrow#2 1 1 1 -
Burrow#5 1 - - -
south burrow #7: hole about 2 feet below top of blouff, just north of photo of south bluff and north of bulge in bluff - 1 3 -
south burrow #S3 2 - - -
total 6 2 6 -

disturbance - eagles (?? - ??) () As we were walking to the site, an eagle was perched on the biggest erratic in the water just off the north nesting bluff. The birds were VERY far out from shore--so far they were hard to see and count. That bird flew off at 8:40 but two eagles, one mature and one juvenile flew in at 8:45 and one perched on bare branch of tree on bluff on south end of north colonies and another perched deeper back on bluff over middle of north colonies. I could not see what happened to the eagle perched farther back on bluff but the visibly perched eagle remained on the perch for the entire time of the survey. Birds in the northern colony stayed fairly far off shore but started moving closer about 9:30 and began making a few careful reconnaissance flights closer and closer to bluff with a few visits. Birds in the north colony never came very close to shore although they gradually resumed more normal activity in the water--staying towards water off far north area of bluff away from area where eagle was perched and making quick visits to burrows and getting back out to deeper water quickly.

disturbance - fishing boat (8:52 - 9:04) (fly off water) A fishing boat parked for a period fairly close to shore in front of bluffs. Birds did not seem to be particularly disturbed except that they flew off water as boat moved in and relocated north and west of boat until boat left.

survey.note - Inhibited activity in north colony versus south

2015-07-25 @ Lake Hancock North

Survey start time: 7:45 , Observers: Tom McCullough, Betsy McCullough, Claudia Mitchell
adult PG count today: 53
total volunteer hours: 6.75
burrownopreysculpingunnelsother
Burrow #10 3 - - -
Burrow #11 4 - 1 -
Burrow #12: crack near top of bluff on south side of outcropping that houses burrow #4 on the north side. - - - -
Burrow #14 5 - - -
Burrow #15 6 - - -
Burrow #2 4 - - -
Burrow #8 11 - 1 -
Burrow#13: At far southern end of north colony, near top of bluff just south of large vertical crack and just north of tree leaning horizontally to the south. 3 - - -
Burrow#3: Hole at top of bluff under left (north) side of large bush on top of bluff and 1/3 of way from north outcropping at burrow #6 and south outcropping at #4 8 - - -
Burrow#4 2 - - -
Burrow#5 11 - - -
South Burrow #S4 4 - - -
South burrow #S3 4 - - -
South burrow #S7 - - 2 1
total 65 - 4 1

survey.note - morning with no disturbances

2015-08-01 @ Lake Hancock North

Survey start time: 8:15, Observers: Tom McCullough, Betsy McCullough, Claudia mITCHELL
adult PG count today: 56
total volunteer hours: 6.75
burrownopreysculpingunnelsother
Burrow #11 2 - 1 -
South Burrow #S7 - - - 3
total 2 - 1 3

disturbance - eagle (? - ?) () An eagle was perched on a tree midway up the bluff just off the northernmost edge of the north colony when we arrived at the bluff at about 7:50. All the birds were far out in the water and scatteredas solitary birds or groups of no more than 2-3. Very few of them were located offshore in the area of the nests. In fact, most birds were in water quite a distance north of where the colonies were located. The eagle flew off its perch and was no longer visible to me around 8:20 but I could hear eagles from the top of the bluff in that general area until 8:30. After the trilling was no longer heard, the guillemots gradually flew back to the area in front of the burrows and got closer to shore although they remained a moderate distance off shore and never perched on rocks or bluff. They did begin to gtroup together and engage in more social activities (billing and chattering and grooming each other) by around 8:45.

disturbance - eaqle (9:13 - ?) (fly off water) Eagle perched at south colony a couple of minutes before we ended the survey. The birds in that area scattered to deeper water and did not return before we had left the area.


2015-08-08 @ Lake Hancock North

Survey start time: 8:20, Observers: Mary Hulbert, Tom McCullough, Betsy McCullough, Claudia Mitchell
adult PG count today: 53
total volunteer hours: 10.0

no burrow data entered

disturbance - Eagles (8:10 - ?) () Birds were already far out in the water and scattered when we were walking down the beach, suggesting that there had already been a disturbance. Just after we arrived at our survey location, an eagle flew over the beach from the south and perched in a tree on the bluff about one hundred yards north of the northernmost burrows. At 8:22, another previously unseen eagle was seen to fly off a perch at the southern end of the colony ahnd flew over the birds in the water at the northern colony area, circling twice over the swimming birds before perching next to the other eagle on the same tree branch noted above. Both eagles remained on the perch for the entirety of our visit. The guillemots gradually ventured closer to shore with a couple of guillemots holding fish in their mouths (one with a gunnel and one with a sculpin) for most of the hour and periodically flying with a partner and circling as if in approach to make a delivery but then deciding to land back in deeper water, then again gradually approaching closer to shore and making another aborted attempt. These aborted attempts happened three more times and finally both fish were delivered to the same burrow, # 11, at 9:24 which was 4 minutes after our survey end so the visits could not be officially counted. Intetrestingly, other birds without fish made touch and go visits to the bluff shortly before the fish deliveries as if testing to see if it was safe for the deliveries to be made. Both deliveries were made with birds quickly flying straight into burrow and other birds returning fairly far out in the water.disappearing

survey.note - Fish deliveries made after survey end. As noted in disturbance note. 2 fish, one scu;lpin and one gunnel were delivered to burrow #11 at 9:24, just after the survey end time. They were the only fish deliveries. There sere several other birds seen holding fish as if waiting for delivery but thjere was no other activity to the burrows today, likely due to the two eagles perched just off the c,lony.

2015-08-15 @ Lake Hancock North

Survey start time: 7:45, Observers: Tom McCullough, Betsy McCullough, Claudia Mitchell
adult PG count today: 65
total volunteer hours: 7.5

no burrow data entered

disturbance - unknown disturbance (7:59 - 8:30) (fly off water) Birds had been in water fairly close to shore and two guillemots carrying fish in their mouth had positioned themselves close to shore in the usual spot where they tended to initiate bird deliveries (just out from the biggest erratic at water's edge). Shortly before 8 AM, those birds and others suddenly flew out to deeper water and we could not see any clear reason for their movement. They stayed out in deeper area for about 15 minutes and then gradually moved closer into shore. The fish with the gunnel had returned to the area near the large erratic with a small group of others but never made a delivery.

survey.note - Lack of activity