Impact of Environmental Changes on Migratory Bird Survival

Table 1

Traveling time of autumn migration in days as derived from Movebank data.

Tag number	Approximate location before leaving for autumn migration	Date of start of migration	Date when passing 18° North	Number of days passed
14543B	52.1° North	25/08/1997	18/09/1997	24
40534B	52.1° North	16/08/2004	01/09/2004	16
	52.1° North	26/08/2005	11/09/2005	16
	52.1° North	15/08/2006	09/09/2006	25
77195A	52.1° North	11/09/2009	01/10/2009	20
91397A	53.9° North	15/08/2009	30/08/2009	15
93411A	51.8° North	21/08/2009	11/09/2009	21
	51.8° North	12/08/2010	02/09/2010	21
93412A	53.3° North	18/08/2009	08/09/2009	21
Average of; travelling time				19.89
Standard deviation; from average				3.35