Coming and going: when some bird species are flying North, others are already heading South
Article Abstract:
The northern and loggerhead shrikes are two species that are difficult to point out during the migration season. Both shorebird species possess a a distinctive trait similar to that of a woodpecker when in flight. Careful scrutiny of identifying marks is required in telling the species apart.
Publication Name: Nature Canada
Subject: Science and technology
ISSN: 0374-9894
Year: 1992
User Contributions:
Comment about this article or add new information about this topic:
Body doubles: it's hard to tell these finches apart at the feeder
Article Abstract:
The house and purple finches exhibit interesting adaptive behavior. The former are aggressive and efficient food-finders while granting other bird pairs access to their feeders. The purple finches, on the other hand, adapt to varying climate by migrating to regions where food is available.
Publication Name: Nature Canada
Subject: Science and technology
ISSN: 0374-9894
Year: 1992
User Contributions:
Comment about this article or add new information about this topic:
A different breed: crossbills not only hang around during our cold, Canadian winters, they breed than too
Article Abstract:
Crossbills are one of the few Canadian bird species that breed in winter. The crossbill feeds on cones and seed husks, and populations are greatly affected by the food supply in an area.
Publication Name: Nature Canada
Subject: Science and technology
ISSN: 0374-9894
Year: 1992
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Evaporation rates and vapor pressures of individual aerosol species formed in the atmospheric oxidation of alpha- and beta-pinene
- Abstracts: Determination of friction coefficient by employing the ring compression test. Finite element modeling of chip formation in the domain of negative rake angle cutting
- Abstracts: Priming and human memory systems. Memory and awareness. Remembrance of Things Past
- Abstracts: Gene therapy: into the home stretch. ADA gene therapy enters the competition
- Abstracts: Cystic fibrosis pilot projects go begging - CF gene proves uncooperative. Genome Project: an experiment in sharing