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All: THere are a couple of oddities in the NS list. Indeed, all swallows have crashed somewhat (BBS), but the Tree Swallow least and the Bank Swallow most so. Is the latter on the list? I did some casual assessment of arrival times of all 4 species from "NS Birds" records, and found that Tree and Barn (which winter in s. USA-Mexico - had adjusted their arrival times - about 2 weeks earlier since the 1950s, and Bank and Cliff (wintering into S. Am.) have not. So that may be an issue. There's no shortage of nest sites for Cliff and Tree Swallows, of course, and both still benefit from anthropogenic nest sites. Another anomaly (?) in the updated list is the inclusion of E. Wood-Pewee. Its population seems to have been remarkably stationary. Likewise Least Flycatcher. This has been taken by some as reflecting a causal link with reduction of flying insect in open country (from agricultural and domestic insecticides), but not in forest/scrub habitats. So, C. Nighthawk, swallows, E. Kingbird and the like are all in trouble. Cheers, Ian
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