Greater Snow Goose Population Monitoring

Greater Snow Geese are back at the Cap Tourmente National Wildlife Area, Fall 2016

Since 1978, the Cap Tourmente National Wildlife Area (NWA) has witnessed a spectacular increase in the Greater Snow Goose population. Indeed, at the beginning of the century, the population was only about 3,000 birds but now there are close to 1 million. The Cap Tourmente NWA was created to ensure this species’ survival. During their biennial journey between the Atlantic coast and the Far North, Greater Snow Geese stop in this area where they feed on American Bulrush rhizomes and also grain in the fields.

The Canadian Wildlife Service regularly publishes a graph illustrating the number of Greater Snow Geese in the Cap Tourmente NWA for the duration of their fall stay. Counts from Greater Snow Goose surveys conducted at Cap Tourmente NWA this year are available in figure 1.

Figure 1 : Histogram presenting the number of Greater Snow Geese at Cap Tourmente NWA, Fall 2016
(Data for this graph are available in table form below.)

Histogram presenting the number of Greater Snow Geese at Cap Tourmente NWA
Table 1 : Number of Greater Snow Geese at Cap Tourmente NWA, Fall 2016
DateNumber of Greater Snow Geese observed
September 201,000
September 235,200
September 269,200
September 2917,200
September 3022,200
October 122,600
October 235,400
October 640,700
October 742,100
October 838,000
October 945,800
October 1044,500
October 1327,700
October 1418,500
October 1523,000
October 1632,900
October 1931,300
October 2033,000
October 2126,000
October 2638,500
October 2754,500
October 2848,300

Top of Page

At high tide, Greater Snow Geese are sometimes nearer to the shore and more numerous in the fields; observation is thus much easier (tide tables).

The Greater Snow Geese surveys done at Cap Tourmente NWA over the last three falls show a peak abundance around mid-October. Up to 49,800 Greater Snow Geese were counted in 2015.

Figure 2 : Number of Greater Snow Geese at Cap Tourmente NWA for 2013, 2014 and 2015
(Data for this graph are available in table form below)

Number of Greater Snow Geese
Table 2 : Number of Greater Snow Geese at Cap Tourmente NWA for 2013, 2014 and 2015
Date201320142015
September 135,600--
September 149,000--
September 155,300--
September 16-6,3001,200
September 17--1,700
September 1818,000--
September 19---
September 2015,000--
September 21---
September 22-14,8001,300
September 2327,000-1,500
September 24-37,600-
September 2540,000-9,500
September 26--28,400
September 2734,00052,40034,000
September 28-50,000-
September 29---
September 3043,500-44,100
October 138,00048,00049,800
October 230,50038,00046,300
October 334,50033,00036,400
October 431,00026,50036,100
October 521,00038,500-
October 642,000--
October 7--15,200
October 8-22,5005,000
October 945,80027,0007,500
October 1041,00029,6008,500
October 1155,50039,30023,500
October 1245,50041,50028,500
October 1341,00044,000-
October 1455,000--
October 15--18,000
October 16--12,000
October 1740,50058,000-
October 1828,20037,000-
October 1944,00030,00013,800
October 2034,000-13,600
October 21--5,500
October 2241,00021,00021,000
October 2331,500--
October 24---
October 25---
October 26---
October 27---
October 28---
October 29---
October 30---
October 31---

Top of Page

Date modified: