FIGURE 4. Glaucous-winged Gull population growth rate trajectory derived from counts at breeding colonies (hollow points) compared with population trajectories derived from population modeling (solid points) under 4 scenarios of increasing complexity: (A) Decline in clutch size only; (B) Decline in clutch size and nesting success; (C) Decline in clutch size and nesting success, and survival to 1 yr, and (D) Decline in clutch size and nesting success, plus inclusion of additive eagle mortality on eggs and chicks based on scaled eagle abundance.
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