Monday, March 7, 2016

Field Note #10: marine mammal visitor day!

Date of Survey: 030416
Official Low Tide: 10:08 am         
Survey start time: 9:00 am   
Survey end time: 11:10 am
Tide heights: .02 feet/ 6cm
Mudflats exposed? Y but not until 9:22am 

Temperature: 75°F/ 23°C      
Cloud cover: 20%

Common Name
Counts of birds foraging on mud flats
Behavior
Forage-F
Rest/roost-R
Fly over -FO
Disturbance
(Flushing-F, displaced-D, agitated-A)
Feeding location
*Primary flat (P)
  Mangrove flat (M)
Great egret
3
F-1, FO-2
D-h-2
M
Snowy egret
3
F
D-h-1; F-h-1
M
Great blue heron
6
FO, R
D-h-1
M
Little blue heron
3
F

M
white ibis
6
R, F
F-h-3
M
Total
21








































Notes:  The tides were a bit higher and the mudflats were not starting to be exposed until 30 minutes before official low tide. Then they were smaller than usual. The Mangrove flat areas were very small.

There were tons of people. 2 paddle boarders that insisted on paddling right at the mangrove edge so all of the birds retreated into the mangroves. We observed one snowy egret Displaced by them. The white Ibis flushed but returned to forage in the same location. The one person made four trips in the area and managed to keep many birds from foraging.

We counted a whopping 18, yes I said EIGHTEEN kayakers. They paddled close to flats and of course stopped on the flats. The numbers of people varied but there was a consistent flow of human disturbance. Don’t people work on Friday’s anymore?














Side notes: We expanded the survey from three fixed point areas to five. The new points give another vantage point of the exposed flats, but also offer observation of more secluded flat areas to compare if birds are using those more than the open areas.


SUPER BONUS! Two manatee were observed in the area, as well as two bottlenose dolphin in the outer areas of the study area. This made me nostalgic for the Dolphin Research I was participating in with Taras Oceanographic Foundation.  They do great work. Learn more by visiting the link to their website. Support local scientists.

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