Atlantic Flyway Review -- Region V

Banding activities in Region V in 1975 were similar to those of 1974.The stations at Woodend and St. Michaels were discontinued, but a new station 5 miles south of St. Michaels was opened at Bellevue by Henry Armistead.For the locations of the various banding stations in Region V see the map in the 1974 report (North American Bird Bander 1:75-82).As in the past several years, the great majority of the birds banded were caught at the three full-time stations: Adventure in the Potomac Valley near the fall line, Damsite on the east shore of Chesapeake Bay, and Kiptopeke at the mouth of Chesapeake Bay.At these three stations, 17,244 birds were banded during the 1975 fall season; this is 77% of the regional total of 22,315 birds.A comparative summary of the banding results for each station in 1975 and 1974 is shown in Table 1.Most stations were in operation from late August through late October or early November.The most productive banding periods were 13-16 Sept., 28-30 Sept., 16-20 Oct. and 26-28 Oct. Comparing only those stations that were operated both years, the number of birds banded per net-hour of effort declined 20% from 1974 to 1975.Myrtle Warbler captures declined sharply at Kiptopeke and Damsite, but doubled at Adventure (where there was an 11% increase in net-hours).The greatest change of all was the drop in number of American Redstarts captured at Kiptopeke, a decrease of 1,420 birds (52% decrease) in spite of a 7% increase in banding effort.At Damsite, where there was a 10% decrease in banding effort, Ruby-crowned Kinglets almost doubled.Summarizing for the Region as a whole, the Whitethroated Sparrow was the commonest bird captured in the mountains, with the Ruby-crowned Kinglet in second place.The Myrtle Warbler was the commonest bird at the fall line stations, with White-throated Sparrow in second place.Thrushes were outstanding (30% of all birds banded) at the Round Bay station, which is located on an estuary on the west side of Chesapeake Bay.The three Maryland stations on the eastern shore of the Chesapeake (Damsite, Bellevue and Irish Grove) had little in common, because of major differences in habitats sampled, but Ruby-crowned Kinglet, Myrtle Warbler, Common Yellowthroat and Song Sparrow rated high at two of the three stations.At Kiptopeke, Myrtle Warbler remained in first place despite a drop of more than 40% in number of individuals captured.American Redstart remained in second place, but Ruby-crowned Kinglet replaced Yellowthroat in third place.More comments regarding increases or decreases in various species follow, in the individual station reports.Ga.

Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.