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--Boundary_(ID_Wif7S4gKe2daT7ShASt5xg) Content-type: text/plain; charset=US-ASCII; delsp=yes; format=flowed Content-transfer-encoding: 7BIT THANKS, RANDY! FROM JIM ET AL. Begin forwarded message: > From: Randy G Milton <miltongr@gov.ns.ca> > Date: June 24, 2008 10:34:59 AM ADT > To: "James W. Wolford" <jimwolford@eastlink.ca>, Andrew Boyne > <Andrew.Boyne@EC.GC.CA> > Subject: Re: Fwd: [NatureNS] Black Duck question > > Hello Jim: > > What is described here is a case of brood amalgamation given the > short time between sightings. Although uncommon among dabbling > ducks, as a group waterfowl exhibit this characteristic among many > species. Brood amalgamation can occur when young become separated > from the hen during disturbances, or when brood densities are > high. This typically occurs early in life as most young are > gregarious and until 3-7 days of age have not yet formed stable > bonds with parents. > > Regards > > > > Randy Milton > Manager - Wetlands and Coastal Habitats Program > Department of Natural Resources > 136 Exhibition Street > Kentville, Nova Scotia > B4N 4E5, Canada > Tel: 902-679-6224 > Fax: 902-679-6176 > e-mail: miltongr@gov.ns.ca > > >>>> "James W. Wolford" <jimwolford@eastlink.ca> 2008-06-23 5:16 PM >>> > > > Begin forwarded message: > >> From: "Paul S. Boyer" <psboyer@eastlink.ca> >> Date: June 22, 2008 6:00:59 PM ADT >> To: naturens@chebucto.ns.ca >> Subject: [NatureNS] Black Duck question >> Reply-To: naturens@chebucto.ns.ca >> >> Our feeding station is visited daily by Black Ducks and Mallards. >> A female Black Duck appeared a month ago with eleven young. A day >> later, she had eight; and a few days after that, three. >> >> Then she vanished for a couple of days, and returned with eight >> ducklings, three of which were noticeably larger than the others. >> The bigger three must each weigh twice one of the smaller set. >> Although she is not tagged or otherwise identifiable as the same >> mother, it looks very much that she acquired a new brood of >> ducklings to supplement the survivors from the first brood. The >> ducklings of different sizes coexist, with no squabbling or >> pecking, and are obviously following the same female. >> >> Does this sound reasonable? Can a female Black Duck tend a clutch >> of eggs while leading about the young ones from an earlier hatching? >> >> Paul Boyer, Seabright > > --Boundary_(ID_Wif7S4gKe2daT7ShASt5xg) Content-type: text/html; charset=ISO-8859-1 Content-transfer-encoding: quoted-printable <html><body style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; = -webkit-line-break: after-white-space; "> THANKS, RANDY! FROM JIM ET AL.<br><div><br><div>Begin forwarded = message:</div><br class=3D"Apple-interchange-newline"><blockquote = type=3D"cite"><div style=3D"margin-top: 0px; margin-right: 0px; = margin-bottom: 0px; margin-left: 0px; "><font face=3D"Helvetica" = size=3D"3" color=3D"#000000" style=3D"font: 12.0px Helvetica; color: = #000000"><b>From: </b></font><font face=3D"Helvetica" size=3D"3" = style=3D"font: 12.0px Helvetica">Randy G Milton <<a = href=3D"mailto:miltongr@gov.ns.ca">miltongr@gov.ns.ca</a>></font></div><di= v style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; "><font face=3D"Helvetica" size=3D"3" color=3D"#000000" = style=3D"font: 12.0px Helvetica; color: #000000"><b>Date: = </b></font><font face=3D"Helvetica" size=3D"3" style=3D"font: 12.0px = Helvetica">June 24, 2008 10:34:59 AM ADT</font></div><div = style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; "><font face=3D"Helvetica" size=3D"3" color=3D"#000000" = style=3D"font: 12.0px Helvetica; color: #000000"><b>To: </b></font><font = face=3D"Helvetica" size=3D"3" style=3D"font: 12.0px Helvetica">"James W. = Wolford" <<a = href=3D"mailto:jimwolford@eastlink.ca">jimwolford@eastlink.ca</a>>, = Andrew Boyne <<a = href=3D"mailto:Andrew.Boyne@EC.GC.CA">Andrew.Boyne@EC.GC.CA</a>></font></d= iv><div style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; "><font face=3D"Helvetica" size=3D"3" color=3D"#000000" = style=3D"font: 12.0px Helvetica; color: #000000"><b>Subject: = </b></font><font face=3D"Helvetica" size=3D"3" style=3D"font: 12.0px = Helvetica"><b>Re: Fwd: [NatureNS] Black Duck = question</b></font></div><div style=3D"margin-top: 0px; margin-right: = 0px; margin-bottom: 0px; margin-left: 0px; min-height: 14px; = "><br></div> <div style=3D"margin-top: 0px; margin-right: 0px; = margin-bottom: 0px; margin-left: 0px; ">Hello Jim:</div><div = style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; min-height: 14px; "><br></div><div style=3D"margin-top: = 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">What is = described here is a case of brood amalgamation given the short time = between sightings.<span class=3D"Apple-converted-space">=A0 = </span>Although uncommon among dabbling ducks, as a group waterfowl = exhibit this characteristic among many species. <span = class=3D"Apple-converted-space">=A0 </span>Brood amalgamation can occur = when young become separated from the hen during disturbances, or when = brood densities are high.<span class=3D"Apple-converted-space">=A0 = </span>This typically occurs early in life as most young are gregarious = and until 3-7 days of age have not yet formed stable bonds with parents. = <span class=3D"Apple-converted-space">=A0</span></div><div = style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; min-height: 14px; "><br></div><div style=3D"margin-top: = 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; = ">Regards</div><div style=3D"margin-top: 0px; margin-right: 0px; = margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><br></div><div = style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; min-height: 14px; "><br></div><div style=3D"margin-top: = 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; = min-height: 14px; "><br></div><div style=3D"margin-top: 0px; = margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Randy = Milton</div><div style=3D"margin-top: 0px; margin-right: 0px; = margin-bottom: 0px; margin-left: 0px; ">Manager - Wetlands and Coastal = Habitats Program</div><div style=3D"margin-top: 0px; margin-right: 0px; = margin-bottom: 0px; margin-left: 0px; ">Department of Natural = Resources</div><div style=3D"margin-top: 0px; margin-right: 0px; = margin-bottom: 0px; margin-left: 0px; ">136 Exhibition Street</div><div = style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; ">Kentville, Nova Scotia</div><div style=3D"margin-top: = 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">B4N 4E5, = Canada</div><div style=3D"margin-top: 0px; margin-right: 0px; = margin-bottom: 0px; margin-left: 0px; ">Tel: 902-679-6224</div><div = style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; ">Fax: 902-679-6176</div><div style=3D"margin-top: = 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">e-mail: = miltongr@gov.ns.ca</div><div = style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; min-height: 14px; "><br></div><div style=3D"margin-top: = 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; = min-height: 14px; "><br></div> <blockquote type=3D"cite"><blockquote = type=3D"cite"><blockquote type=3D"cite"><div style=3D"margin-top: 0px; = margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">"James W. = Wolford" <<a = href=3D"mailto:jimwolford@eastlink.ca">jimwolford@eastlink.ca</a>> = 2008-06-23 5:16 PM >>></div> </blockquote></blockquote></blockquote><div = style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; min-height: 14px; "><br></div><div style=3D"margin-top: = 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; = min-height: 14px; "><br></div><div style=3D"margin-top: 0px; = margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Begin = forwarded message:</div><div style=3D"margin-top: 0px; margin-right: = 0px; margin-bottom: 0px; margin-left: 0px; min-height: 14px; = "><br></div> <blockquote type=3D"cite"><div style=3D"margin-top: 0px; = margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">From: "Paul = S. Boyer" <<a = href=3D"mailto:psboyer@eastlink.ca">psboyer@eastlink.ca</a>></div><div = style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; ">Date: June 22, 2008 6:00:59 PM ADT</div><div = style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; ">To: <a = href=3D"mailto:naturens@chebucto.ns.ca">naturens@chebucto.ns.ca</a><span = class=3D"Apple-converted-space">=A0</span></div><div style=3D"margin-top: = 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Subject: = [NatureNS] Black Duck question</div><div style=3D"margin-top: 0px; = margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Reply-To: <a = href=3D"mailto:naturens@chebucto.ns.ca">naturens@chebucto.ns.ca</a><span = class=3D"Apple-converted-space">=A0</span></div><div style=3D"margin-top: = 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; = min-height: 14px; "><br></div><div style=3D"margin-top: 0px; = margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Our feeding = station is visited daily by Black Ducks and Mallards.<span = class=3D"Apple-converted-space">=A0 =A0</span></div><div = style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; ">A female Black Duck appeared a month ago with eleven = young.<span class=3D"Apple-converted-space">=A0 </span>A day <span = class=3D"Apple-converted-space">=A0</span></div><div style=3D"margin-top: = 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">later, = she had eight; and a few days after that, three.</div><div = style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; min-height: 14px; "><br></div><div style=3D"margin-top: = 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Then she = vanished for a couple of days, and returned with eight <span = class=3D"Apple-converted-space">=A0</span></div><div style=3D"margin-top: = 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; = ">ducklings, three of which were noticeably larger than the others.<span = class=3D"Apple-converted-space">=A0 =A0</span></div><div = style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; ">The bigger three must each weigh twice one of the = smaller set.<span class=3D"Apple-converted-space">=A0 =A0</span></div><div= style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; ">Although she is not tagged or otherwise identifiable = as the same <span class=3D"Apple-converted-space">=A0</span></div><div = style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; ">mother, it looks very much that she acquired a new = brood of <span class=3D"Apple-converted-space">=A0</span></div><div = style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; ">ducklings to supplement the survivors from the first = brood.<span class=3D"Apple-converted-space">=A0 </span>The <span = class=3D"Apple-converted-space">=A0</span></div><div style=3D"margin-top: = 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; = ">ducklings of different sizes coexist, with no squabbling or <span = class=3D"Apple-converted-space">=A0</span></div><div style=3D"margin-top: = 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">pecking, = and are obviously following the same female.</div><div = style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; min-height: 14px; "><br></div><div style=3D"margin-top: = 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Does = this sound reasonable?<span class=3D"Apple-converted-space">=A0 = </span>Can a female Black Duck tend a clutch <span = class=3D"Apple-converted-space">=A0</span></div><div style=3D"margin-top: = 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">of eggs = while leading about the young ones from an earlier hatching?</div><div = style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; min-height: 14px; "><br></div><div style=3D"margin-top: = 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Paul = Boyer, Seabright</div> </blockquote><div style=3D"margin-top: 0px; = margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: = 14px; "><br></div><div style=3D"margin-top: 0px; margin-right: 0px; = margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><br></div> = </blockquote></div><br></body></html>= --Boundary_(ID_Wif7S4gKe2daT7ShASt5xg)--
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