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Predatory Functional Morphology in Raptors: Interdigital Variation in Talon Size Is Related to Prey Restraint and Immobilisation Technique

Figure 5

Phylogenetic diagram plotting occurrence of morphologic traits.

Numbered traits in parentheses are present only in selected taxa within the clade (see main text). 1. D-II talon as large or larger than D-III; 2. short tarsometatarsus; 3. hypertrophied D-I and D-II talons; 4. elongate toes; 5. highly recurved talons on all digits; 6. subequally large talons on each digit. General arrangement of families after Hackett et al [28]. Nomenclature and arrangement of Falconidae and Accipitridae after Griffiths et al [31], [32] respectively (see main text for exceptions).

Figure 5