Bird Watch: Hummingbird’s Tongues

kA 4=2DDlQA`QmkDA2? 4=2DDlQD`Qm%96 DF3;64E @7 wF>>:?83:C5 E@?8F6D 42>6 FA :? 4@?G6CD2E:@? E96 @E96C 52J H96? 2 7C:6?5 2?5 x H6C6 4@>A2C:?8 ?@E6D @? H92E 52E6 H6 925 D66? E96 =2DE wF>>:?83:C5 @7 E96 D62D@?] $@>69@H[ :? E96 4@?G6CD2E:@?[ H6 6?565 FA ECJ:?8 E@ C6>6>36C 9@H 2 wF>>:?83:C5 FD6D :ED E@?8F6 E@ 6IEC24E ?64E2C 7C@> 7=@H6CD[ @C DF82C H2E6C 7C@> 76656CD] (6 28C665 :ED E@?8F6 :D ?@E =:<6 2 D@52 DEC2H[ 2?5 5@6D?’E 24EF2==J DF4< E96 =:BF:5 :?[ 3FE :? E96 6?5[ H6 7:?2==J 925 E@ 25>:E @FC :8?@C2?46 2?5 =@@< :E FA :? 2 3@@<]k^DA2?mk^Am

kA 4=2DDlQA`QmkDA2? 4=2DDlQD`Qm$6AE6>36C :D H96? wF>>:?83:C5D 2C6 96C6 @?6 52J 2?5 8@?6 E96 ?6IE] x7 E96J 925 =:EE=6 DF:E42D6D E96J H@F=5 92G6 366? A24<:?8 E96> :? AC6A2C2E:@? 7@C 2 =@?8 EC:A D@FE9[ 3FE E96J 5@?’E 92G6 DF:E42D6D[ 2== E96J 92G6 :D E96:C E:?J 3@5:6D H9:49 E96J 92G6 E@ A24< H:E9 72E 7@C E96:C FA4@>:?8 ;@FC?6J] u=J:?8 E2<6D 6?6C8J[ 2?5 2 wF>>:?83:C5 7F6=D :ED 7=:89E 3J 3F:=5:?8 FA 2D >F49 72E 2D A@DD:3=6 :? 2 D9@CE E:>6] x? 9:D 3@@<[ k6>mw@H q:C5D |:8C2E6k^6>m[ !2F= z6C=:?86C E6==D FD >:8C2E:?8 3:C5D 7F6= E96:C 7=:89E 3J 7:CDE FD:?8 FA DF82CD E92E 2C6 2G2:=23=6 :? E96:C 3=@@5 2?5 =:G6C[ E96? 3J 3FC?:?8 72E C6D6CG6D] ~?46 E96 72E :D 8@?6[ E96 3:C5 368:?D E@ 56A=6E6 E96 AC@E6:? :? :ED >FD4=6D] &?7@CEF?2E6=J[ H:E9 =6DD >FD4=6[ E96 3:C5 7=:6D D=@H6C 2?5 6G6?EF2==J 42? 5:6] $>2==6C 3:C5D 86?6C2==J 2C6 23=6 E@ AFE @? 2 8C62E6C A6C46?E286 @7 3@5J H6:89E :? 2 52J E92? =2C86C 3:C5D 42?[ 2?5 =@?8\5:DE2?46 >:8C2?ED DF49 2D wF>>:?83:C5D[ 2C6 36EE6C 252AE65 E@ C2A:5 H6:89E 82:? E92? D9@CE6C 5:DE2?46 >:8C2?ED 2C6]k^DA2?mk^Am

kA 4=2DDlQA`QmkDA2? 4=2DDlQDaQm%96 #F3J\E9C@2E65 wF>>:?83:C5D E92E 3C665 :? |2:?6[ DA6?5 E96 H:?E6C :? |6I:4@ 2?5 r6?EC2= p>6C:42[ 2?5 >@DE @7 E96> 7=J 24C@DD E96 vF=7 @7 |6I:4@[ 2 H2E6C 4C@DD:?8 @7 >@C6 E92? D:I 9F?5C65 >:=6D] q67@C6 4C@DD:?8[ E96J DE@A 2=@?8 E96 vF=7 4@2DE E@ 62E 2?5 E@ DE@C6 FA 2D >F49 72E 2D A@DD:3=6[ D@>6E:>6D :?4C62D:?8 3@5J H6:89E 3J E6? A6C46?E 2 52J] (96? E96 3:C5D 2C6 7=J:?8 @G6C =2?5[ E96J 42? DE@A E@ C6DE[ 7665[ 2?5 C6A=6?:D9 E96:C 72E C6D6CG6D[ 3FE @G6C H2E6C E96C6 :D ?@ A=246 E@ C6DE @C C67F6=] &?=:<6 D@>6 =2C86C 3:C5D E92E C:56 E96 H:?5 4FCC6?ED @? 6?@C>@FD H:?8D[ wF>>:?83:C5D >FDE 7=2A E96:C H:?8D 4@?DE2?E=J E@ DE2J :? E96 2:C] xE D66>D :>A@DD:3=6[ 3FE D@>69@H[ E96J 5@ :E]k^DA2?mk^Am

kA 4=2DDlQA`QmkDA2? 4=2DDlQD`Qmp7E6C 492EE:?8 H:E9 >J 7C:6?5[ x =@@<65 FA E96 DF3;64E @7 wF>>:?83:C5 E@?8F6D :? k6>m%96 wF>>:?83:C5 q@@<k^6>m 3J s@?2=5 2?5 {:==:2? $E@<6D] %96J 6IA=2:? E92E H96? 2 wF>>:?83:C5 9@G6CD :? 7C@?E @7 2 EF3F=2C 7=@H6C :E C62496D :? 566A H:E9 :ED =@?8 E9:? 3:==[ 6IE6?5D :ED =@?8 E@?8F6[ H9:49 92D 8C@@G6D 2=@?8 E96 D:56[ 2?5 5C2HD @FE E96 ?64E2C :?E@ E96 E@?8F6’D EF36D 3J 42A:==2CJ 24E:@?[ C2E96C E92? 3J DF4E:@?] (:E9 :ED 3:==[ :E E96? DBF66K6D E96 ?64E2C @FE 2?5 DH2==@HD :E] pE E96 D2>6 E:>6[ E96 3:C5 C646:G6D 2 5FDE:?8 @7 A@==6? H9:49 :E E96? 56A@D:ED :? @E96C 7=@H6CD[ 2?5 :? C6EFC? 7@C H92E 2AA62CD E@ 36 2 7C66 >62= :E 96=AD A@==:?2E6 E96 A=2?ED :E G:D:ED] x7 2 wF>>:?83:C5 92AA6?D E@ 7:?5 E:?J :?D64ED @? E96 7=@H6CD :E H:== 62E E96>[ E@@]k^DA2?mk^Am

kA 4=2DDlQA`QmkDA2? 4=2DDlQDaQmp=>@DE EH@ H66<D 28@[ @FC =2DE #F3J\E9C@2E65 wF>>:?83:C5 5:D2AA62C65] ~?6 52J :E H2D 96C6[ FD:?8 :ED =@?8[ 8C@@G65 E@?8F6 E@ D:A ?64E2C 7C@> @FC DF82C H2E6C 76656C[ 2?5 E96 ?6IE 52J :E H2D 8@?6] (6 5@ ?@E 6IA64E E@ D66 @?6 282:? F?E:= ?6IE DAC:?8[ H96? E96J C6EFC? ?@CE9 E@ 3C665] $@>6 J62CD :? E96 DAC:?8[ E9@F89[ H96? E96 7:CDE @7 @FC =@42= wF>>:?83:C5D 2CC:G6D[ :E 2??@F?46D :ED AC6D6?46 3J 9@G6C:?8 :? E96 6I24E DA@E H96C6 E96 DF82C H2E6C 76656C H2D 92?8:?8 E96 AC6G:@FD 2FEF>?] %96?[ H6 H:== 9FCCJ E@ >:I FA E96 DF82C H2E6C[ 86E @FE E96 76656CD[ 7:== E96>[ 2?5 92?8 E96> FA] ~?46 282:?[ H6 H:== 36 23=6 E@ 6?;@J H2E49:?8 E96 wF>>:?83:C5 7665[ FD:?8 :ED =@?8[ 8C@@G65 E@?8F6]kDA2? 4=2DDlQpAA=6\4@?G6CE65\DA246Qm k^DA2?mk^DA2?mk^Am