How do birds migrate thousands of miles and navigate?

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1. 1

   Bird migration (Wikipedia)

   WikipediaPublished Oct 17, 2026Checked Oct 17, 2026

   “Bird migration is a seasonal movement of some birds between breeding and wintering grounds that occurs twice a year. It is typically between northern and southern regions. Migration carries inherent risks, including predation and other hazards en route. The Arctic tern holds the long-distance migration record for birds, travelling between Arctic breeding grounds and the Antarctic each year. Some species of tubenoses, such as albatrosses, circle the Earth, flying over the southern oceans, while others such as Manx shearwaters migrate 14,000 km (8,700 mi) between their northern breeding grounds and the Southern Ocean. Shorter migrations are common, while longer ones are not. The shorter migrations include altitudinal migrations on mountains, including the Andes and Himalayas. The timing of migration seems to be controlled primarily by changes in day length. Migrating birds navigate using celestial cues from the Sun and stars, the Earth's magnetic field, and mental maps.”

2. 2

   Free-ranging Manx shearwaters do not rely on magnetic maps or compasses.

   Current biology : CB (Lewin et al.)Published Sep 9, 2026Checked Oct 17, 2026

   “the inclination of the earth's magnetic field, using this cue as a compass5,18 and perhaps as part of a map sense.13,14,15 However, without a definitively identified receptor,18,19,20,21,22,23,24,25 and with mixed evidence from experiments in other birds,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46 avian magnetoreception remains controversial. Following recent observational findings that wild Manx shearwaters (Puffinus puffinus) use geomagnetic inclination to relocate their natal colony after their first migration,47 we used this species to conduct the largest magnetic disruption experiment in wild birds to date. We found no effects of magnetic disruption on movement or navigation during the long-distance foraging trips of adult Manx shearwaters. Assessment of effect sizes and confidence intervals suggests that shearwaters do not require geomagnetic cues to home accurately. This demonstrates that at least some birds are capable of remarkable long-distance navigation in the absence of geomagnetic information, and we propose that the field of animal navigation should seek to understand the factors driving the differences in the navigational mechanisms of avian taxa.”

3. 3

   Reverse migration (birds) (Wikipedia)

   WikipediaPublished Sep 29, 2026Checked Oct 17, 2026

   “Reverse migration, also called reverse misorientation, is a phenomenon whereby a bird migrates in the opposite direction to that typical of its species during the spring or autumn. For example, if a bird breeding in central Asia reverses its normal southeasterly migration, as shown by the orange arrow, it will end up in Western Europe instead of South East Asia. This mechanism may lead to birds such as Pallas's leaf warblers turning up thousands of kilometres from where they should be. Keith Vinicombe suggested that birds from east of Lake Baikal in Siberia (circled) could not occur in western Europe because their migration routes were too north–south. Most of these lost young birds perish in unsuitable wintering grounds, but there is some evidence that a few survive, and either re-orient in successive winters, or even return to the same area. Many birds that detour from their regular migration patterns find themselves in adverse wintering circumstances, so a considerable number may not survive. However, there is compelling evidence that a tiny percentage adapt and survive in their unusual wintering locations.”

4. 4

   First Record of Dark-sided Flycatcher (Muscicapa sibirica) for Temperate North America: Intercontinental Vagrancy and Migratory Misorientation.

   Ecology and evolution (Freeland et al.)Published Apr 10, 2026Checked Oct 17, 2026

   “We detail the occurrence of a Dark-sided Flycatcher (Muscicapa sibirica), a highly migratory passerine species typically found in East Asia, at an urban site in California on 17-19 September 2025, establishing the first record of this species and genus for temperate North America. We age this individual as a first-fall bird and discuss molt strategies in the genus Muscicapa. We identify it as a member of the nominate subspecies, therefore likely originating from highly migratory populations that breed in northeast Asia. We evaluate mechanisms by which this individual may have arrived in California and discuss the concepts of reversal and mirror-image misorientation, modes of anomalous navigation that may provide explanations for Palearctic-Nearctic vagrancy in highly migratory Asian passerines. Our observation represents a noteworthy addition to the known avifauna of temperate North America. In documenting this occurrence, we draw attention to the remarkable but little-studied process of long-distance vagrancy in migratory birds.”

5. 5

   Distant Landmarks Used for Navigation by Homing Pigeons.

   Life (Basel, Switzerland) (Wikelski et al.)Published Jun 1, 2026Checked Oct 17, 2026

   “Birds were first trained to home individually from two ground sites, each ~15 km from their loft. Subsequently, trained individuals were released from a plane ~400 m above the terrestrial release sites during sunny conditions. This was followed by two experimental release conditions above continuous ground fog. Above the fog, pigeons cannot use a map or olfactory location cues, but may potentially use magnetic cues. When all landmarks were hidden by ground fog, pigeons showed poor orientation, tortuous flight paths, and descended through the fog within four min, advancing only ~0.1 km (0.1% of the distance) towards home. They subsequently waited for solar cues to continue homing. By contrast, when distant landmarks (alpine mountain tops) were visible, pigeons maintained strong homeward orientation, flying for 20 min and covering 96% of the distance to home, similar to ground-level controls (17 min, 80%). These results demonstrate that when known olfactory cues or local maps are excluded, distant landmarks-but not magnetic cues-enable efficient short-distance homing in experienced pigeons.”

6. 6

   Brain activity in Cluster N and the hippocampus in non-migratory zebra finches completing a spatial orientation task using magnetic compass information.

   PloS one (Brodbeck et al.)Published Apr 30, 2026Checked Oct 17, 2026

   “Our objective was to determine if Cluster N is active when zebra finches use their magnetic compass to orient in a plus maze. Zebra finches were tested under three conditions: i) a static magnetic field that reliably indicated the food location, ii) a sweeping magnetic field, or iii) a vertical magnetic field. The latter two conditions did not provide any directional information. Brains were collected following the task and processed to label the immediate early gene zenk. We found elevated Zenk immunoreactivity in the forebrain region defined as Cluster N in other species and in the hippocampus. We found no differences in Zenk between the three magnetic field conditions, providing no conclusive evidence for whether Cluster N is involved in the processing of magnetic compass information. In conclusion, our results are consistent with the idea that Cluster N is not a brain area restricted to nocturnally migrating songbirds, but that it is also found in non-migratory birds carrying out a spatial orientation task, possibly involving magnetic compass cues, under dim light conditions.”