Larus delawarensis Ord, 1815
ring-billed gull
No Picture Available

Family:  Laridae ()
Max. size:  53 cm TL (male/unsexed); max.weight: 471.0 g
Environment:  others; marine
Distribution:  Indo-Pacific, Atlantic Ocean and the Mediterranean: Belize, Costa Rica and Netherlands Antilles.
Diagnosis:  Culmen: 4.24 cm; tarsus: 5.08 cm; wing: 37.7 cm.
Biology:  Total Length: 45 to 53 cm; Wingspan: 121 to 127 cm (Ref. 8812). Coastal; <31 km (Ref. 356). One of the few species that nest and forage in inland habitats, and move to the coast during non-breeding season. Nest of simple construction. Embryos are exceptionally known to elicit parental incubation behavior by vocalizing. Regurgitated pellets cast by adults to feed its cheeks during the nestling period contain mostly earthworms or fish (Ref. 87784). Display dipping and surface plunging (Ref. 356).
IUCN Red List Status: (LC); Date assessed: 08 August 2018 Ref. (120744)
Threat to humans: 
Country info:   

Entered by: Karpouzi, Vasiliki - 12.06.07
Modified by: Parducho, Vina Angelica - 28.03.14

Source and more info: For personal, classroom, and other internal use only. Not for publication.

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