. The Canadian field-naturalist. Natural history. 614 The Canadian Field-Naturalist Vol. 117 700. 200 M I I! ^ I' ,|oddnoo Unon rion^cn. r 'i âr-T _ TO O CD * Q 100 -I n Wi HI sfk â q c â \âr- e nâr 0 -*1âlJ-T-J 0 0 - 0 1 - t -6 n,n,v.#,°, 0 LJiâr- 0 nâr-T- 0 -V-Sâr~r""r 0 0 0 O CM TT O CM ^ OOOCM'<»IOCOOCM<*CQCOOCM'o>c»a>a>a>a>a>0' co oo o a> c» en Figure 2. Maximum counts of redpolls (upper) and number of dates noted (lower, log scale), for each winter starting in year shown, observed by McManus near Memramcook (black), and by Erskine near Sackville (
. The Canadian field-naturalist. Natural history. 614 The Canadian Field-Naturalist Vol. 117 700. 200 M I I! ^ I' ,|oddnoo Unon rion^cn. r 'i âr-T _ TO O CD * Q 100 -I n Wi HI sfk â q c â \âr- e nâr 0 -*1âlJ-T-J 0 0 - 0 1 - t -6 n,n,v.#,°, 0 LJiâr- 0 nâr-T- 0 -V-Sâr~r""r 0 0 0 O CM TT O CM ^ OOOCM'<»IOCOOCM<*CQCOOCM'o>c»a>a>a>a>a>0' co oo o a> c» en Figure 2. Maximum counts of redpolls (upper) and number of dates noted (lower, log scale), for each winter starting in year shown, observed by McManus near Memramcook (black), and by Erskine near Sackville (white), in New Brunswick. Extended lines show outliers, solid or open bar indicating the 2nd highest count in that year. longer "runs" with few or no redpolls, especially 1952-1958 and 1973-1980, were influenced in part by irregular coverage; others likely were real. Of those 62 winters, 53 with data, we noted no red- polls at all in only 13, thus detecting some redpolls in three-quarters of the winters. In 8 of those winters, our sightings totalled 10) on CBCs in far more winters than might be expected if "biennial periodicity" was the major or only factor controlling redpoll occurrence. If redpolls often moved into or through our area before or after the CBC period, season-long observa- tions should have detected those birds in some years when none were met on CBCs, despite the larger observer effort in the latter exercise. Actually, the local CBCs detected redpolls in an even larger proportion of winters than McM and AJE did. A look at redpoll data from a wider geographic scene seemed desirable. Other Atlantic Provinces CBCs Within the Atlantic Provinces, CBC coverage (mini- mal before 1960) expanded steadily up to 1980, in numbers both of counts and of observers. In 1980-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustr
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