Insects and lobsters. They're both arthropods. Birds are in a completely different phylum.
Insects and Lobsters
Insects and Lobsters
lobsters, hermit crabs, snails, most insects
Hermit crabs are most related to spiders, lobsters and crabs.
Chitin is the polysaccharide found in the exoskeleton of crabs, lobsters, and insects. It is a structural molecule that provides strength and protection to these arthropods. Chitin is composed of N-acetylglucosamine units and is the second most abundant biopolymer in nature after cellulose.
Both some birds and most spiders eat insects and spiders.
Ovoviviparous refers to an animal that retains the egg inside of them until it hatches and gives birth to larval young. Two insects that do this are Sarcophagid flies and tachinids.
Birds and insects are the best agent of pollination because they can fly and reach the flower. Most animals animals can't fly and so huge to pollinate the pollen. Birds and insects can fit in the flower.
Most small birds do especially Flycatchers
The group of vertebrates most closely related to birds are probably the dinosaurs.
Dinosaurs are most closely related to birds to the extent that birds are cnsidered a branch of dinosaurs.
They are mostly related to DINOSAURS