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<DIV>I have to comment that for many exotic invasives the native birds seem quite content to eat their fruit, alas hastening their spread. For example, Winged Euonymus, non-native Lonicera species, Multiflora Rose, and White Mulberry to mention a few. There may be some additional factor than general unfamiliarity of the exotic plant. For example, the dense spininess of Wineberry may be especially repellent to native birds...? Just a thought. Cheers,</DIV>
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<DIV> Steve Young</DIV>
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<DIV> In a message dated 6/30/04 5:04:17 PM Eastern Daylight Time, ialm@erols.com writes:</DIV>
<BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: blue 2px solid"><FONT face=Arial>Hal,<BR><BR>In regards to wineberry the birds leave for you to enjoy, it takes many <BR>tens to hundreds of thousands of years for instinct to change for most <BR>birds through mutations and selection, and thousands of years if cultural <BR>evolution can work for birds. In the approximately 100 million years <BR>the continents have been separated such adaptions are normal and <BR>presumbably desirable for biodiversity but not at the pace of today.<BR><BR>The Eurasian and American continents have been apart 100 million <BR>years. Occasionally living species cross with birds, logs etc. and <BR>nature can adjust. However, the great influx of living material today <BR>has brought in many species that proliferate in the new continent <BR>with nothing that eats them or controls them. <BR><BR>Does anyone have more information on the selectivity by birds of <BR>native blackberries and raspberries over non-native wineberry. Thanks!<BR><BR>Marc<BR><BR>Marc Imlay,<BR>Board member of the Mid-Atlantic Exotic Pest Plant Council,<BR>Hui o Laka at Kokee State Park, Hawaii<BR>Vice president of the Maryland Native Plant Society,<BR>Chair of the Biodiversity and Habitat Stewardship Committee for the<BR>Maryland Chapter of the Sierra Club.<BR>----- Original Message -----<BR>From: "Planes" <planes@bellatlantic.net><BR>To: "Marc Imlay" <ialm@erols.com><BR>Sent: Tuesday, June 29, 2004 9:38 PM<BR>Subject: Last Sunday at Chapman's<BR><BR><BR><BR>Marc,<BR><BR>I just wanted to say thanks for the guided tour on the Sassafras Trail<BR>at Chapman State Park Sunday. It was a highlight of a pleasant and<BR>enjoyable annual gathering of the Conservancy for Charles County and I<BR>appreciate your contribution.<BR><BR>I enjoyed your comments on the various plants and the volunteer work to<BR>eradicate invasive species and was stupified by the vision of three-foot<BR>diameter sassafras trees. I was especially gratified to learn the<BR>identity of wineberry, as I have been snacking on a patch of those on my<BR>property near Zekiah Swamp over the three decades we've lived here. The<BR>wineberries border my back garden at the edge of a forest and are near<BR>my raspberries. The birds plunder my raspberries mercilessly despite my<BR>efforts to protect them with netting and they help themselves to the<BR>berries of various bushes and hollies that I keep around just for them.<BR>But, strangely, they don't seem to touch the wineberries. Those they<BR>leave for me to enjoy. Why is that?<BR><BR>Thanks again.<BR><BR>Hal Delaplane<BR><BR><BR><BR><BR><BR>_______________________________________________<BR>APWG mailing list<BR>APWG@lists.plantconservation.org<BR>http://lists.plantconservation.org/mailman/listinfo/apwg_lists.plantconservation.org</FONT></BLOCKQUOTE></DIV>
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