Not Found

The requested URL /mbrowse/msdb/OriginOfSpecies/description/is/As+we+sometimes+see+individuals+following+habits+different+from+those+proper+to+their+species+and+to+the+other+species+of+the+same+genus,+we+might+expect+that+such+individuals+would+occasionally+give+rise+to+new+species,+having+anomalous+habits,+and+with+their+structure+either+slightly+or+considerably+modified+from+that+of+their+type.+And+such+instances+occur+in+nature. Can+a+more+striking+instance+of+adaptation+be+given+than+that+of+a+woodpecker+for+climbing+trees+and+seizing+insects+in+the+chinks+of+the+bark? Yet+in+North+America+there+are+woodpeckers+which+feed+largely+on+fruit,+and+others+with+elongated+wings+which+chase+insects+on+the+wing. [[[[[images/USA.jpg|North+America]]]]] [[[[[images/woodpecker.jpg|woodpecker]]]]] [[[[[images/fruit.jpg|fruit]]]]] [[[[[images/insect.jpg|insect]]]]] On+the+plains+of+La+Plata,+where+hardly+a+tree+grows,+there+is+a+woodpecker+(Colaptes+campestris)+which+has+two+toes+before+and+two+behind,+a+long+pointed+tongue,+pointed+tail-feathers,+sufficiently+stiff+to+support+the+bird+in+a+vertical+position+on+a+post,+but+not+so+stiff+as+in+the+typical+woodpeckers,+and+a+straight+strong+beak. [[[[[images/La+Plata.jpg|La+Plata]]]]] [[[[[images/Colaptes+Campestris.jpg|Colaptes+Campestris]]]]] The+beak,+however,+is+not+so+straight+or+so+strong+as+in+the+typical+woodpeckers,+but+it+is+strong+enough+to+bore+into+wood. Hence+this+Colaptes+in+all+the+essential+parts+of+its+structure+is+a+woodpecker. Even+in+such+trifling+characters+as+the+colouring,+the+harsh+tone+of+the+voice,+and+undulatory+flight,+its+close+blood-relationship+to+our+common+woodpecker+is+plainly+declared;+yet,+as+I+can+assert,+not+only+from+my+own+observation,+but+from+those+of+the+accurate+Azara,+in+certain+large+districts+it+does+not+climb+trees,+and+it+makes+its+nest+in+holes+in+banks! In+certain+other+districts,+however,+this+same+woodpecker,+as+Mr.+Hudson+states,+frequents+trees,+and+bores+holes+in+the+trunk+for+its+nest.+I+may+mention+as+another+illustration+of+the+varied+habits+of+this+genus,+that+a+Mexican+Colaptes+has+been+described+by+De+Saussure+as+boring+holes+into+hard+wood+in+order+to+lay+up+a+store+of+acorns. [[[[[images/Mexican+Jay.jpg|Mexican+Jay]]]]] [[[[[images/acorn.jpg|acorn]]]]]/ was not found on this server.