Tern migration peak has passed on the Sunshine Coast, Qld

To: birding-aus <>
Subject: Tern migration peak has passed on the Sunshine Coast, Qld
From: Jill Dening <>
Date: Tue, 15 Mar 2011 07:59:25 +1000
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.



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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