The large bill of the island scrub-jay is related to its diet, of thick-shelled acorns which they bury, or cache, in the fall and eat months later. They also eat insects, spiders, snakes, lizards, mice, and other birds' eggs and nestlings. These birds are monogamous, often having the same mates all their lives. They are also territorial. Breeding habitat appears to be saturated on the island, causing young individuals to delay breeding for up to several years. Until breeding space becomes available, unmated individuals use marginal habitats not suitable for breeding. Non-breeders do not defend territories, but rather forage and roost in loose groupings or on their own.
[{"birds": "island scrub-jay", "color": "n/a", "months": "n/a", "extinct": "no"}]
[{"birds": "scrub-jay", "color": "n/a", "months": "n/a", "extinct": "n/a"}] [{"birds": "island scrub-jay", "color": "n/a", "months": "n/a", "extinct": "no"}] [{"birds": "island scrub-jay", "color": "n/a", "months": "n/a", "extinct": "n/a"}]