As a recent study on pink-footed geese Anser brachyrhynchus
suggests, the solution for defining management units may reside in the compilation of different sources of data (ring recoveries/CMR, population genetics, isotopes, Madsen et al.
caninum infections in carnivorous birds including red-tailed hawks (Buteo jamaicensis), turkey vultures (Cathartes aura), barn owls (Tyto alba), or American crows (Corvus brachyrhynchus
) fed rodents chronically infected with N.
Using habitat selection theories to predict the spatiotemporal distribution of migratory birds during stopover--a case study of pink-footed geeseAnser brachyrhynchus
. Oikos 124(7):851-86.
The geosaurini (Metriorhynchus brachyrhynchus
, Neptunidraco ammoniticus, Tyrannoneustes lythrodectikos, Torvoneustes carpenteri, Geosaurus lapparenti and Dakosaurus maximus) are coded  (centrum length and width subequal), whereas the metriorhynchines (Cricosaurus suevicus, Cricosaurus gracilis, Rhacheosaurus gracilis and Metriorhynchus superciliosus) are coded  (centrum length less than centrum width).
Lack of competition between barnacle geese Branta leucopsis and pink-footed geese Anser brachyrhynchus
during the pre-breeding period in Svalbard.
9 Syrphidae Allograpta exotica (Wiedemann) Allograpta obliqua 13 (Say) Copestylum mexicanum 26 (Macquart) Copestylum 1 sexmaculatum (Palisot de Beauvois) Meromacrus acutus 3 (Fabricius) Ocyptamus costatus 4 (Say) Palpada agrorum 36 (Fabricius) Pseudodoros clavatus 21 (Fabricius) Toxomerus verticalis 5 (Curran) Trichopsomyia banksi 2 (Curran) Conopidae Physocephala 18 sagittaria (Say) Physocephala 2 tibialis (Say) Physoconops 13 brachyrhynchus
(Macquart) Physoconops 6 bulbirostris (Loew) Physoconops 1 floridanus Camras Physoconops 3 obscuripennis (Williston) Physoconops 5 sylvosus (Williston) Zodion abitus Adams 1 Zodion americanum 5 Wiedemann Micropezidae Grallipeza nebulosa (Loew) Lonchaeidae Lonchaea sp.
For example, Pink-footed Geese (Anser brachyrhynchus
) spend the winter months feeding in sugar beet fields in southern Great Britain where there is frequent disturbance from roads, which results in a strong negative relationship between distance from the road and proportion of beets consumed (Gill et al.
Pink-footed goose Anser brachyrhynchus
An adaptive harvest management (AHM) framework exists for the Svalbard population of the pink-footed goose Anser brachyrhynchus
and taiga bean goose A.
Range expansions of Red-tailed Hawks (Buteo jamaicensis; 1880s-1940s; Houston, 1983) and Common Crows (Corvus brachyrhynchus
, 1880s-1920s; Houston, 1977) in Saskatchewan were attributed to area-specific increases in distribution of forests caused by cessation of grassland fires by Native Americans; during this time, Red-tailed Hawks replaced more open-prairie hawks--Swainson's Hawks (Buteo swainsoni) and Ferruginous Hawks (Buteo regalis) (Houston, 1983).
Two colonies of barnacle geese (Branta leucopsis (Bechstein)) occur in cliffs along the coast and pink-footed geese (Anser brachyrhynchus
Baillon) have formed a colony in the middle part of the valley.
The Svalbard breeding population of pink-footed geese Anser brachyrhynchus
, wintering in Norway, Denmark, the Netherlands and Belgium, has increased substantially in recent decades.