▁ ▁See ▁also ▁ ▁Initial ization ▁( programming ) ▁ ▁References ▁ ▁Further ▁reading ▁ ▁C WE - 4 5 7 ▁Use ▁of ▁Un initial ized ▁Variable ▁. ▁ ▁Category : So ftware ▁bugs ▁Category : Variable ▁( comput er ▁science ) <0x0A> </s> ▁The ▁S ible y ▁Guide ▁to ▁Bird s ▁is ▁a ▁reference ▁work ▁and ▁field ▁guide ▁for ▁the ▁birds ▁found ▁in ▁the ▁contin ental ▁United ▁States ▁and ▁Canada . ▁It ▁is ▁written ▁and ▁illustrated ▁by ▁orn ith ologist ▁David ▁Allen ▁S ible y . ▁The ▁book ▁provides ▁details ▁on ▁ 8 1 0 ▁species ▁of ▁birds , ▁with ▁information ▁about ▁identification , ▁life ▁history , ▁vocal izations , ▁and ▁ge ographic ▁distribution . ▁It ▁contains ▁several ▁paint ings ▁of ▁each ▁species , ▁and ▁is ▁crit ically ▁acc laimed ▁for ▁including ▁images ▁of ▁each ▁bird ▁in ▁flight . ▁Two ▁regional ▁field ▁gu ides ▁using ▁the ▁same ▁material ▁as ▁The ▁S ible y ▁Guide ▁to ▁Bird s ▁were ▁released ▁in ▁ 2 0 0 3 , ▁one ▁for ▁the ▁western ▁half ▁of ▁North ▁American ▁and ▁one ▁for ▁the ▁eastern ▁half . ▁ ▁The ▁guide ▁was ▁favor ably ▁review ed ▁by ▁The ▁New ▁York ▁Times , ▁The ▁Wilson ▁Bul letin ▁( now ▁The ▁Wilson ▁Journal ▁of ▁Or n ith ology ), ▁and ▁the ▁journal ▁Western ▁Bird s . ▁ ▁References ▁ ▁External ▁links ▁ ▁S ible y ' s ▁website ▁for ▁the ▁March ▁ 2 0 1 4 ▁ 2 nd ▁edition ▁Up dates ▁and ▁corre ctions ▁to ▁the ▁ 4 th ▁printing