I received wonderful photos of both the current Boulder prothonotary and northern parula with FLIES in their beaks. Flies from a few families (Calliphoridae, Muscidae, Tachinidae, Sarcophagidae, Syrphidae, others) regularly or at least occasionally seek out aphid honeydew deposited on plant surfaces. Aphids are tiny. Most of the honeydew-seeking insects are bigger. So, while aphids may be initial target and overriding staple of late-migrating insectivorous birds (along with midges), the aphid-associated insects are welcome gravy they don't ignore.
Dave Leatherman Fort Collins -- -- You received this message because you are subscribed to the Google Groups "Colorado Birds" group. To post to this group, send email to cobirds@googlegroups.com For more options, visit this group at http://groups.google.com/group/cobirds?hl=en?hl=en * All posts should be signed with the poster's full name and city. Include bird species and location in the subject line when appropriate * Join Colorado Field Ornithologists https://cobirds.org/CFO/Membership/ --- You received this message because you are subscribed to the Google Groups "Colorado Birds" group. To unsubscribe from this group and stop receiving emails from it, send an email to cobirds+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/cobirds/PH7PR12MB73540CA4E29A951780500B8FC13F9%40PH7PR12MB7354.namprd12.prod.outlook.com.
