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15 results for “frigatebird”
FIGURE 3 in Osteology of the feeding apparatus of Magnificent Frigatebird Fregata magnificens and Brown Booby Sula leucogaster (Aves: Suliformes)
FIGURE 3: Lateral and dorsolateral views of the mandible (Mandibula) of Magnificent Frigatebird Fregata magnificens (A) and Brown Booby Sula leucogaster (B). Pars symphisialis (rostrum mandibulae) (si), Sulcus paratomialis mandibulae (sp), Processus pseudocoronoidei mandibulae (p1, p2), Cotyla lateralis fossae articularis quadratica (cl), Cotyla caudalis fossae articularis quadratica (cc), Processus retroarticularis partis caudalis mandibulae (prm), Processus lateralis partis caudalis mandibulae (plm), Fossa articularis quadratica (faq), Cotyla medialis fossae articularis quadratica (cm), Crista intercotylare (cin), Processus medialis partis caudalis mandibulae (pmm).
FIGURE 2 in Osteology of the feeding apparatus of Magnificent Frigatebird Fregata magnificens and Brown Booby Sula leucogaster (Aves: Suliformes)
FIGURE 2: Lateral (A, B), dorsal (C) and ventral (D) views of the skull of Brown Booby Sula leucogaster. Ramus mandibulae (rm), Zona flexoria craniofacialis (zfc), Caput ossis lacrimalis (cl), Processus descendens ossis lacrimalis (pd), Pes ossis lacrimalis (pl), Processus postorbitalis (por), Crista temporalis dorsalis (ctd), Crista nuchalis sagittalis (cns), Crista nuchalis transversae (cnt), Crista laminae externae cranii (cle), Processus squamosalis (ps), Processus orbitalis quadrati (poq), Fossa musculorum temporalium (ft), Fossa subtemporalis (fs), Regio frontalis (f), Regio parietalis (p), Processus rostralis ossis palatini (prp), Fossa ventralis partis lateralis palatini (fvp), Lamellae ventralis (lv), Angulus caudolateralis (acl), Os pterygoideus (pt).
FIGURE 1 in Osteology of the feeding apparatus of Magnificent Frigatebird Fregata magnificens and Brown Booby Sula leucogaster (Aves: Suliformes)
FIGURE 1: Lateral (A, B), dorsal (C) and ventral (D) views of the skull of Magnificent Frigatebird Fregata magnificens. Ramus mandibulae (rm), Zona flexoria craniofacialis (zfc), Caput ossis lacrimalis (cl), Processus descendens ossis lacrimalis (pd), Pes ossis lacrimalis (pl), Processus postorbitalis (por), Processus orbitalis quadrati (poq), Crista temporalis dorsalis (ctd), Crista laminae externae cranii (cle), Crista nuchalis transversae (cnt), Processus squamosalis (ps), Fossa musculorum temporalium (ft), Fossa subtemporalis (fs), Regio frontalis (f), Regio parietalis (p), Processus rostralis ossis palatini (prp), Angulus rostrolateralis (arl), Fossa ventralis partis lateralis palatini (fvp), Lamellae ventralis (lv), Angulus caudolateralis (acl), Os pterygoideus (pt).
Figure 3 in A neotype designation for the Ascension Frigatebird Fregata aquila (Aves: Fregatidae)
Figure 3. Neotype of Fregata aquila (Linnaeus, 1758): Ventral, lateral, and dorsal views of specimen BMNH 1899.1.4.13 in the Natural History Museum at Tring, UK. Scale bar: 30 cm.
Figures 1-2 in A neotype designation for the Ascension Frigatebird Fregata aquila (Aves: Fregatidae)
Figures 1-2. (1) Plate LIV, figure 2 of PETIVER (1764 [1702-1706]), named 'The Indian Forked Tail'. (2) Plate LXXX of ALBIN (1731), named the 'The Frigate Bird'. Note the all-black plumage and red gular pouch characteristic of adult male frigatebirds.
Young frigatebirds learn how to compensate for wind-drift
<p><span><span><span><span><span><span><span><span><span><span><span>Compensating for wind drift can improve goalward flight efficiency in animal taxa, especially amongst those that rely on thermal soaring to travel large distances. Little is known, however, about how animals acquire this ability. The great frigatebird (<i>Fregata minor</i>) exemplifies the challenges of wind drift compensation because it lives a highly pelagic lifestyle, traveling very long distances over the open ocean but without the ability to land on water. Using GPS tracks from fledgling frigatebirds, we followed young frigatebirds from the moment of fledging to investigate whether wind drift compensation was learnt and, if so, what sensory inputs underpinned it. We found that the effect of wind drift reduced significantly with both experience and access to visual landmark cues. Further, we found that the effect of experience on wind drift compensation was more pronounced when birds were out-of-sight of land. Our results suggest that improvement in wind drift compensation is not solely the product of either physical maturation or general improvements in flight control. Instead, we believe it is likely that they reflect how frigatebirds learn to process sensory information so as to reduce wind drift and maintain a constant course during goalward movement. </span></span></span></span></span></span></span></span></span></span></span></p>
Young frigatebirds learn how to compensate for wind-drift
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FIGURE 6 in New specimens of the early Eocene frigatebird Limnofregata (Pelecaniformes: Fregatidae), with the description of a new species
FIGURE 6. Limnofregata hasegawai, new species, paratype, FMNH PA 719, skull and mandible. Scale = 2 cm. Inset: right and left lacrimal bones showing pneumatic foramina in the corpus.
FIGURE 1 in New specimens of the early Eocene frigatebird Limnofregata (Pelecaniformes: Fregatidae), with the description of a new species
FIGURE 1. Limnofregata azygosternon, referred postcranial skeleton with feather impressions GMNH PV 167.
FIGURE 4 in New specimens of the early Eocene frigatebird Limnofregata (Pelecaniformes: Fregatidae), with the description of a new species
FIGURE 4. Limnofregata azygosternon, referred cranium and posterior portion of mandible USNM 447002. The orbit is perhaps overemphasized by matrix remaining along the margin.
FIGURE 7 in New specimens of the early Eocene frigatebird Limnofregata (Pelecaniformes: Fregatidae), with the description of a new species
FIGURE 7. Limnofregata hasegawai, paratype, BMS E 25336 associated pelvis and hindlimbs without feet.
FIGURE 5 in New specimens of the early Eocene frigatebird Limnofregata (Pelecaniformes: Fregatidae), with the description of a new species
FIGURE 5. Limnofregata hasegawai, new species, holotype GMNH PV 170 (above), compared with skull and mandible of the holotype of L. azygosternon USNM 22753 (below).
Data from: Infection with Haemoproteus iwa affects vector movement in a hippoboscid fly – frigatebird system
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FIGURE 2 in New specimens of the early Eocene frigatebird Limnofregata (Pelecaniformes: Fregatidae), with the description of a new species
FIGURE 2. Limnofregata azygosternon, referred posterior portion of skeleton FMNH PA 723.
FIGURE 3 in New specimens of the early Eocene frigatebird Limnofregata (Pelecaniformes: Fregatidae), with the description of a new species
FIGURE 3. Limnofregata azygosternon, referred left wing FMNH PA 720.
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Allen Brain Atlas
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International Brain Laboratory public data
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OpenNeuro
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