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By William S Clark; Brian K Wheeler; National Audubon Society.; National Wildlife Federation

ISBN-10: 0395360013

ISBN-13: 9780395360019

ISBN-10: 0395441129

ISBN-13: 9780395441121

ISBN-10: 0395936152

ISBN-13: 9780395936153

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Extra resources for A field guide to hawks, North America

Sample text

Juven il es witb mod e rate markings on underparls will most like ly beco me rufou s- morph aclults. Pall' seapulars form a V on bac ks of perched ju ve nil es. [g) LIGHT INTERMEDIATE JUVENilE. Typical ju ve nil e with some dark marking~ on underparts and two dark pa tc hes on s ides of upper breast. [h) INTERMIDIATE-MORPH JUVINILE. Juvc niles with moderatc markings on un de rparts and und e rwin g coverts will l1lost likel y become rufous l1lorph adults. \I\lingtips appear very poinled on gliding birds .

Ove ra ll d a rk. D a rk ta il ba nd s a re \v ide r. N otl' darh spilws on tips (Jfla il f eathers. Id]INTlRMEDIATI · MORPH JUVENILE. D ark, wi th s t ro n g face p a tt e rn a nd s treak ing on breas t. No te ba r red lips o n o ut e r prim ar ies . /~ spilws (m li ps tail f eathers a nd seco nda ri es. \ TES JUVENILE DARK RED-TAILED AND HARLAN'S HAWKS PLATE 27 F E BHU G INO U S I-I A \\! nd n

Adult lineatus has brown h ead and brown strcaking on und e rparts . uck tail has 3 or 4 narrow whiLe ballds. [b] ADULT, EXTIMUS . Similar to linea£1ls , but h ead is gray a nd rufous under­ parts are paler and lac k dark streaking. [e] ADULT, IIHEArUS. Bold black-ami-white patLem on flight fea thers and white crescent-sl1al1ed primary panel are distinctive. RUjOl/$ lesse r wing covert patches are usually notic ea ble. [d] ADULT, ElEGAHS. Somewhat similar to lineatus but overall more brightly colored.

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A field guide to hawks, North America by William S Clark; Brian K Wheeler; National Audubon Society.; National Wildlife Federation


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