Sentence examples for birds extant from inspiring English sources

The groups involved in rearing and teaching captive-raised whooping cranes to migrate are well intentioned and dedicated to keeping these magnificent birds extant.

The waxworks are more modern, dating from the late-17th century, and include Charles II, William III and Queen Anne, as well as Frances Stuart, the Restoration model for Britannia, dressed in her Coronation robes and even accompanied by her pet parrot (one of the earliest stuffed birds extant in the UK).

In addition, the Tetrapoda include vertebrates that have reduced, modified or lost their limbs in the course of evolution, such as whales (mammals), snakes (reptiles) and birds (extant relatives of the extinct theropod dinosaurs) (Buergin 1998; Coates et al. 2008; Clack 2009).

Tracking pneumatic patterns in the fossil record is complicated by the one-sided nature of outgroup comparison, which is restricted to birds among extant vertebrates, and the ambiguous meaning of the absence of a soft structure that only sometimes leaves an osteological imprint [55].

In contrast, Tischlinger and Unwin [4] highlighted that these feathers are equivalent to the "feather trousers" of many extant birds (e.g. birds of prey), that as in Archaeopteryx are exclusively attached to the tibia and femur.

Moreover, we observed a further reduction (n = 3) in the ancestral branch of all extant birds, which resulted in only three intact Tas2rs in the common ancestor of birds (fig. 3).

In extant birds, iridescent feathers play a role in sexual selection and display (think of the magnificent birds of paradise), and this may have been the case in early birds as well.

Do we want to exclude some or all members of the stem group: that is, species of lines collateral to the extant bird group, but closer to birds than to their closest living relatives (the crocodilians)?

The gizzard (ventriculus) is a trait shared by all extant birds, and indeed by their closest living relatives the crocodilians.

Aves represents the group of extant birds, their most recent common ancestor, and all of that ancestor's descendants: the crown group.

By comparison, clutch care by most extant birds is biparental and the clutches are of small relative volume, and consist of but few small eggs.