Julio

Julio

Amav
 

Julio's nests

Substrate: live (46.4%) and dead (50%) trees
Added by Julio about 8 years ago
Last activity: about 8 years ago
Kent Lake has supported a colony since the mid-1960s. I started monitoring 11 nests in 1981 and the colony increased by about 10% each year, peaking in the mid-1990s at 52 active nests; it has since plateaued at about 30 active nests each year. In 2008 a pair of Bald Eagles established a nest and have produced young each subsequent year. Ospreys have maintained their numbers through 2011. In 2012, of 40 established nest sites we had 32 occupied nests and 28 active nests. In 2013, of 40 nest sites we had 28 occupied and 19 active. There appears to be a downward trend since Bald eagles began nesting amidst the colony in 2008. However, the number of active nests around San Francisco Bay has increased concurrently with the Kent Lake decline. UPDATE (13 Nov 2015): In 2014 we identified 36 nest sites of which 25 were "occupied" and 14-25 were classified as "active." In 2015 we identified 33 nest sites with 28 occupied and 21 active. A Bald Eagle pair nesting amidst the colony produced 2 fledglings for the 8th consecutive year.
Substrate: live and dead trees
Added by Julio about 8 years ago
Last activity: about 8 years ago
Kent Lake has supported a colony since the mid-1960s. I started monitoring 11 nests in 1981; the colony peaked in the mid-1990s at ~50 active nests and has since plateaued at about 25-30 active nests each year. In 2008 a pair of Bald Eagles established a nest and have produced young each subsequent year. Ospreys have continued to sustain about 25-30 active nests each year. Of 41 nest sites identified in 2012, seven nests (17.1%) were unused, 34 (82.9%) were classified as occupied and 27 (65.9%) were classified as active.
Substrate: Live and dead trees
Added by Julio about 8 years ago
Last activity: about 8 years ago

Julio's photos

Osprey11_nests_map