Extended Data Fig. 2: Segmented surface models of the SPD in cranial and right lateral views.
From: The respiratory system influences flight mechanics in soaring birds
a–u, The right (turquoise) and left (blue) subpectoral diverticulum, pectoral girdle and humeri of the red-tailed hawk (B. jamaicensis) (a–e,h–l,o–s) and Swainson’s hawk (B. swainsoni) (f,g,m,n,t,u) in ventral (a–g), left lateral (h–n) and cranial (o-u) views in various states of inflation. a,h,o, Ptolemy: male, deceased, and artificially inflated via a tracheotomy. b,i,p, Lysimachus: male, deceased, and deflated (imaged at natural end tidal volume). c,j,q, Seleucus: male, deceased, and artificially inflated via a tracheotomy. d,k,r, Seleucus: male, deceased, imaged deflated. e,l,s, Roxana: female, live, sedated, natural apnoea. f,m,t, Polyperchon: male, deceased, and artificially inflated a tracheotomy. g,n,u, Eurydice: female, live, sedated, natural apnoea with vascular contrast selectively removed from the model.