Fall Warbler Migration Guide

The following warblers are arranged from early season to late season. Note that many species share the same peak dates (mid to late August).

Figure 18: Our earliest season warbler, the Yellow Warbler, paired with other abundant, early August species. YEWA, BAWW, AMRE, and CSWA. Fall passage in frequency, eastern Ontario, 1990-2016.

Figure 19: Common Yellowthroat and American Redstart are very similar in frequency (shown), totals, and migration timing. Fall passage in totals, eastern Ontario, 1990-2016.

Figure 20: Cape May and Blackburnian are very similar in frequency, totals (shown), and migration timing. Fall passage in totals, eastern Ontario, 1990-2016.

Figure 21: Golden-winged, Blue-winged, and Brewster’s (hybrid). Not at all common finds during fall migration! Fall passage in totals, eastern Ontario, 1990-2016.

Figure 22: Mourning Warbler & Canada Warbler. Both are highly sought-after species, and, rightly so! Mourning, in particular, are a prize find. Fall passage in totals, eastern Ontario, 1990-2016.

Figure 23: Ovenbird & Northern Waterthrush. Skulkers of the underbrush. Fall passage in totals eastern Ontario. 1990-2016.

Figure 24: Nashville & Tennessee warblers. Fall passage in frequency, eastern Ontario. 1990-2016.

Figure 25: Blackpoll & Bay-breasted warblers. For information on how to separate these two look-a like’s, please see http://eontbird.ca/?p=873. Fall passage in frequency, eastern Ontario. 1990-2016.

Figure 26: The Heavyweight Champion of the Warblers, the Connecticut Warbler. The best time to look for this species is from the last few days of August through to the beginning of the second week of September. Very early September, in particular, is prime COWA season. Fall passage in totals, eastern Ontario. 1990-2016.

Figure 27: Northern Parula & Magnolia Warbler. Fall passage in frequency, eastern Ontario. 1990-2016.

Figure 28: Black-throated Green and Black-throated Blue Warbler. Fall passage in frequency, eastern Ontario. 1990-2016.

Figure 29: Palm Warbler. Fall passage in frequency, eastern Ontario. 1990-2016.

Figure 30: Pine Warbler. Fall passage in frequency, eastern Ontario. 1990-2016.

Figure 31: Wilson’s Warbler. Fall passage in frequency, eastern Ontario. 1990-2016.

Figure 32: Orange-crowned Warbler. A highly sought-after and characteristically late-season migrant. Fall passage in frequency, eastern Ontario. 1990-2016.

Figure 33: Yellow-rumped Warbler. Fall passage in frequency, eastern Ontario. 1990-2016.