Table 1 Phenology of Common Tern migration based on tracks by light-level geolocators
From: Geolocator study reveals east African migration route of Central European Common Terns
Mk001 | Mk006 | Z548 | Z555 | |
|---|---|---|---|---|
Date logger deployed | 27 June 2014 | 8 June 2014 | 31 May 2016 | 7 June 2016 |
Date logger retrieved/stopped | 4 Nov 2014 | 28 Feb 2015 | 30 May 2017 | 8 June 2017 |
Number of tracking days | 130 | 267 | 365 | 366 |
Departure from breeding ground | 17 Aug | 20 Aug | 19 July | 19 July |
Arrival to autumn stopover site | ||||
Lower Nile | 19 Aug | 22 Aug | ‒ | 23 July |
Southern Red Sea | 7 Oct | 27 Aug | 26 July | 26 July |
No. of days at a stopover site | ||||
Lower Nile | 35 | 2 | ‒ | 0 |
Southern Red Sea | 4 | 110 | 67 | 67 |
Departure from stopover site | ||||
Lower Nile | 6 Oct | 24 Aug | ‒ | 23 July |
Southern Red Sea | 11 Oct | 15 Dec | 10 Oct | 10 Oct |
Arrival to wintering site | 31 Oct | 19 Dec | 26 Oct | 26 Oct |
Duration of post-breeding migration (days) | 75 | 121 | 99 | 99 |
Distance travelled during post-breeding migration (km) | 7247 | 7501 | 9117 | 9554 |
Departure from wintering site | ‒ | ‒ | 16 Mar | 19 Mar |
Arrival to spring stopover site | ‒ | ‒ | 31 Mar | 31 Mar |
No. of days at a stopover site | ‒ | ‒ | 5 | 5 |
Departure from stopover site | ‒ | ‒ | 5 Apr | 5 Apr |
Arrival to the breeding site | ‒ | ‒ | 9 Apr | 9 Apr |
Duration of prenuptial migration (days) | ‒ | ‒ | 24 | 21 |
Distance travelled during prenuptial migration (km) | ‒ | ‒ | 8659 | 9040 |