Hi,
Where have the terns migrated from and where are they going to?
Carl Weber
-----Original Message-----
From:
On Behalf Of Jill Dening
Sent: Tuesday, 15 March 2011 8:59 AM
To: birding-aus
Subject: Tern migration peak has passed on the Sunshine Coast,
Qld
Hi Everyone,
Last night we did a count of migratory terns arriving to roost in Noosa,
Qld. The vast majority of these birds are Common Terns, but also
included are Little Terns and White-winged Black Terns. This confirmed
that the migration peak has passed in our area. Unfortunately we only
conduct one count each month, limiting our knowledge of the actual peak,
but below are some figures going back to Nov, 05, with dates. Note that
there was a gap in data collection between January and December 2007,
and that we missed a count in March, 2010.
Birds are normally counted on the wing in blocks of 10, so the figures
are never exact. Occasionally at peak periods they are counted in blocks
of 50s, or even 100s rarely.
Cheers,
Jill
Survey_Date Sum Of Number_Seen
28-Nov-05 2380
14-Jan-06 12560
08-Feb-06 38340
08-Mar-06 14910
12-Mar-06 6020
15-Dec-06 573
15-Jan-07 2050
19-Dec-07 2740
17-Jan-08 2930
21-Feb-08 6650
15-Mar-08 1900
22-Apr-08 765
15-Dec-08 60
12-Jan-09 15030
11-Feb-09 1280
05-Mar-09 7400
09-Apr-09 5150
23-Jul-09 6
21-Aug-09 1
10-Dec-09 1170
18-Jan-10 2454
16-Feb-10 6330
15-Apr-10 3379
20-May-10 369
15-Jun-10 264
12-Jul-10 268
13-Aug-10 385
23-Nov-10 7280
07-Dec-10 11000
27-Jan-11 12830
24-Feb-11 21110
16-Mar-11 7170
--
Jill Dening
Sunshine Coast, Queensland, Australia
26° 51' 41"S 152° 56' 00"E
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