Category: Gaviidae

Mercury exposure to Red-throated Divers [Gavia stellata] and Black-throated Divers [Gavia arctica] in Sweden

Red-throated Loon (Gavia stellata) Science Article 3 abstract We investigated concentration of mercury in eggs of Redthroated Diver [Gavia stellata] and Black-throated Diver [Gavia arctica] collected in South and Central Sweden, 1981-1997. In South Sweden (Sydsvenska Hoglandet), mean concentration in Red-throated Diver eggs was remarkably high (6.84 ppm dry weight, 5 pairs), or more than […]

Feeding schedule and daily food consumption in red-throated loons (Gavia stellata) over the prefledging period

Red-throated Loon (Gavia stellata) Science Article 1 abstract We describe parental feeding activities of Red-throated Loons (Gavia stellata) throughout the prefledging period at two freshwater nesting territories in coastal British Columbia. The nesting lake contained resident fish populations, but adult loons fed marine fish to their young, making an average of 11 flights per day […]

Winter behavior of the common loon

Loon (Gavia immer) Science Article 4 abstract A 2-yr study was conducted on the winter behavior of the Common Loon (Gavia immer) at Weekapaug, Rhode Island. Behavior of loons was assessed by recording the type of activity every 60 s for a 5-min period. Activity budgets showed an increase in the amount of time spent […]

Winter behavior of the common loon

Loon (Gavia immer) Science Article 4 abstract A 2-yr study was conducted on the winter behavior of the Common Loon (Gavia immer) at Weekapaug, Rhode Island. Behavior of loons was assessed by recording the type of activity every 60 s for a 5-min period. Activity budgets showed an increase in the amount of time spent […]

Digestive Efficiency and Energy Requirements of Captive-reared Common Loons (Gavia immer)

Loon (Gavia immer) Science Article 3 abstract Many wild Common Loons have been exposed to mercury contamination; thisstudy will help increase understanding of how it affects their lives by providinginformation about digestive efficiency. The assimilated mass coefficient (AMC) foreight captive-reared Common Loons (Gavia immer) was determined by this studyto be 80% of dry fish. Rainbow […]

Digestive Efficiency and Energy Requirements of Captive-reared Common Loons (Gavia immer)

Loon (Gavia immer) Science Article 3 abstract Many wild Common Loons have been exposed to mercury contamination; thisstudy will help increase understanding of how it affects their lives by providinginformation about digestive efficiency. The assimilated mass coefficient (AMC) foreight captive-reared Common Loons (Gavia immer) was determined by this studyto be 80% of dry fish. Rainbow […]

Territorial takeover in Common Loons (Gavia immer)

Loon (Gavia immer) Science Article 1 abstract Breeding Common Loons (Guvia immer) are well known for vigorously defending their territory from conspecifics. Territory holders are not previously known to be supplanted by loons during the breeding season. I observed a pair of adult Common Loons displace a resident pair from their territory shortly after a […]

Territorial takeover in Common Loons (Gavia immer)

Loon (Gavia immer) Science Article 1 abstract Breeding Common Loons (Guvia immer) are well known for vigorously defending their territory from conspecifics. Territory holders are not previously known to be supplanted by loons during the breeding season. I observed a pair of adult Common Loons displace a resident pair from their territory shortly after a […]