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A Horvitz–Thompson‐type estimator is introduced to estimate total abundance of the Bering–Chukchi–Beaufort Seas population of bowhead whales using combined visual and acoustic location data. The estimator divides sightings counts by three correction factors that are themselves estimated from various portions of the data. The first correction models how detection probabilities depend on covariates...
Estimating visual detection probabilities of migrating western Arctic bowhead whales from independent observers on two ice‐based perches presents challenges that cannot be resolved using standard capture‐recapture methods. Distant visual sighting and resighting of intermittent whale surfacings is very unlike recapturing banded birds or tagged fish. We develop several bias correction strategies that...
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