The Collaborative International Dictionary
Stragulum
Stragulum \Strag"u*lum\, n.; pl. Stragula. [L., a spread or covering, from sternere to spread out.] (Zo["o]l.) The mantle, or pallium, of a bird.
Wiktionary
stragulum
n. (context zoology English) The mantle, or pallium, of a bird.